【开放英语4(英语II(2))-1162网上形考机考题库】 — How much is this necklace

【开放英语4(英语II(2))-1162网上形考机考题库】 — How much is this necklace?
— _________
A. It’s very nice.
B. It’s a birthday present from my parents.
C. It costs fifty pounds.
D. It’s a bargain.