Which sentence uses possessive pronouns correctly?

A.
Those suitcases are their's.

B.
Have you seen the cat and its kittens?

C.
Carl said that the markers were his'.

D.
The squirrel carried it's acorns up the oak tree.

Question

Which sentence uses possessive pronouns correctly?	
 
 A.
Those suitcases are their's.
 
 B.
Have you seen the cat and its kittens?
 
 C.
Carl said that the markers were his'.
 
 D.
The squirrel carried it's acorns up the oak tree.

anonymous · Answer

it would ether be C or D 
 But this is not the right section for this. this belong in the writing section

anonymous · Answer

I believe it would be D