I need help with this because I'm confused which is incorrect in one sentence?

Common grammar mistake is to mix up ‘who’s’ and ‘whose’. Which of these sentences is incorrect?

a)Can you tell me who's got my jacket?
b)Whose clothes are these?
c)Who's going to the party tonight?
d?Who's books do these belong to?

Respuesta :

a because if you take out the "who's" turn it into "who is" then does it sound right
Who's=who is
A and D are incorrect.