Correct option is B
Option (b) is the correct meaning of the given idiom.
Come what may: This idiom means
whatever happens or regardless of the difficulties, one will continue with their decision or action. (जो भी हो जाए, किसी भी हालत में)
Example: Come what may, I will not back out of this commitment.
Other related idioms and their meanings:
·
Against all odds – Despite great difficulties
·
Rain or shine – No matter what the situation
·
By hook or by crook – Using any means necessary