It is
letter a. Nixon
lied under oath when questioned about the break-in. He claimed to have no knowledge of the
break-ins but it was revealed that he recorded meetings that he had in his
office. This led to the conviction of
many of his top aides. Rather than face
impeachment, he resigned. It can also be letter c. because he did not give up all of his tapes and that is an obstruction of the investigations.
