Which of the Following Is a Requirement for Filing a Decertification

Which of the following is a requirement for filing a decertification petition?

A) At least 50% of the bargaining unit members must petition for an election.
B) Signatures on the petition must be publicized to ensure authenticity.
C) The petition must be submitted 60 to 90 days before the current contract expires.
D) Union members must submit their dues on or before the date of the contract's renewal.