You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.

Paragraph- Sent 1: Alexis de Tocqueville and Gustave de Beaumont in America: Their Friendship and Their Travels edited by Oliver Zunz, translated by Arthur Goldhammer (University of Virginia Press; 2011) 698 pages; Includes previously unpublished letters, essays, and other writings Du systeme penitentaire aux Etats-Unis et de son application en France (1833) - On the Penitentiary System in the United States and Its Application to France, with Gustave de Beaumont.
Sent 2: De la democratie en Amerique (1835/1840) - Democracy in America.
Sent 3: It was published in two volumes, the first in 1835, the second in 1840.
Sent 4: English language versions: Tocqueville, Democracy in America, trans.
Sent 5: and eds., Harvey C. Mansfield and Delba Winthrop, University of Chicago Press, 2000; Tocqueville, Democracy in America (Arthur Goldhammer, trans.; Olivier Zunz, ed.) (The Library of America, 2004) ISBN 978-1-931082-54-9.
Sent 6: L'Ancien Regime et la Revolution (1856) - The Old Regime and the Revolution.
Sent 7: It is Tocqueville's second most famous work.
Sent 8: Recollections (1893) - This work was a private journal of the Revolution of 1848.
Sent 9: He never intended to publish this during his lifetime; it was published by his wife and his friend Gustave de Beaumont after his death.
Sent 10: Journey to America (1831-1832) - Alexis de Tocqueville's travel diary of his visit to America; translated into English by George Lawrence, edited by J-P Mayer, Yale University Press, 1960; based on vol.
Sent 11: V, 1 of the OEuvres Completes of Tocqueville.
Sent 12: L'Etat social et politique de la France avant et depuis 1789 - Alexis de Tocqueville Memoir On Pauperism: Does public charity produce an idle and dependant class of society?
Sent 13: (1835) originally published by Ivan R. Dee.
Sent 14: Inspired by a trip to England.
Sent 15: One of Tocqueville's more obscure works.
Sent 16: Journeys to England and Ireland 1835. 
Question: What expeditions inspired the creation of this novel? (A) Visit to United States (B) Visit to England (C) Traveling to England and Ireland.
A, C.