In order to collect the bounty on Blackbeard, Robert Maynard did which of the following unusual things?

a
He shaved off Blackbeard's beard to bring it back.
b
He brought Blackbeard's head along as proof.
c
He sailed Queen Anne's Revenge back into Charles Town where it was immediately sank.
d
He mummified Blackbeard to bring the body back preserved as evidence.