Detailed Instructions: In this task, you're given a passage that represents a legal contract or clause between multiple parties, followed by a question that needs to be answered. Based on the paragraph, you must write the index where the answer starts. If multiple answers seem to exist, write the index of the answer that is the most plausible. If multiple indices must be used to answer the question, the output should be a common separated list of indices.
Problem:JOINT FILING AGREEMENT

Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the Exchange Act), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including any amendment, restatement, supplement, and/or exhibit thereto) with the Securities and Exchange Commission (and, if such security is registered on a national securities exchange, also with the exchange), and further agrees to the filing, furnishing, and/or incorporation by reference of this agreement as an exhibit thereto. This agreement shall remain in full force and effect until revoked by any party hereto in a signed writing provided to each other party hereto, and then only with respect to such revoking party.

IN WITNESS WHEREOF, each party hereto, being duly authorized, has caused this agreement to be executed and effective as of the date set forth below.

Date: April 7, 2020 BANK OF AMERICA CORPORATION

By: Ally Pecarro Name: Ally Pecarro Title: Attorney-in-fact

BANC OF AMERICA PREFERRED FUNDING CORPORATION

By: Michael Jentis Name: Michael Jentis Title: Authorized Signatory 
Question: Highlight the parts (if any) of this contract related to Effective Date that should be reviewed by a lawyer. Details: The date when the contract is effective
Solution:
909