. Which of the following sentences is correctly punctuated?

AThe local police asked the FBI to assist with the case.
BMary remembered to buy milk didn't she?
CMr. Jones visited the YMCA before becoming a member.
DThe company held it's annual party at the convention center.

Verified Answer :

b, She remembered to buy milk, didn't she?
c Mr, Jones visited the YMCA,before becoming a member.
d The company held its annual party at the conventional center
A is punctuated correctly

A is correct.
B is incorrect because there should be a comma after 'milk'
C is incorrect, there should be a comma after YMCA.
D is incorrect because it used the wrong 'its '