In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Question: When did King Wenceslaus III's dynasty begin? Passage:Another opportunity for a Habsburg gain in power opened when in 1306 King Wenceslaus III, the last Bohemian ruler of the Přemyslid dynasty, was killed and Albert I as rex Romanorum was able to seize his kingdom as a reverted Imperial fief. Rudolph was vested with the Bohemian throne, however contested by his maternal uncle Henry of Gorizia, Duke of Carinthia and husband of Wenceslaus' sister Anne. When several Bohemian nobles elected Henry King of Bohemia, Albert I placed his brother-in-law under the Imperial ban and marched against Prague. Henry fled, first to Bavaria, then back to his Carinthian homelands. To further legitimate the Habsburg claims to the Bohemian and the Polish throne, Albert had Rudolph married to Princess Elizabeth Richeza of Poland, a member of the Piast dynasty and widow of the predeceased King Wenceslaus II.
 Links: a. Henry of Bohemia b. Piast dynasty c. Prague d. Přemyslid dynasty
d