Which of the following sentences is the underlined verb is the the future perfect tense?
A. By that time, he "will have been" gone for three days.
B. Jean's daughter "has begun" to drive.
D. She really should "begin" to pack
C. They "will take" the dog to the park with them.
Note: the underlined verbs are
A. will have been
B. has begun
C. will take
I think the answer is "A"