posted by Cassie .
Which one of the following sentences contains an incorrect usage of the singular possessive?
A. Icarus's fate was sealed when he approached the sun.
B. Mary was dominant among Jesus' disciples.
C. The alpha male is often the pack's leader.
D. The north forty has always been my family's land.
I picked A, because the apostrophe should be after the first s and not have two s's. Is this correct?