There are three books coded as A, B and C. The price of book A is twice the price of book B and one-third the price of book C. If book C costs ₹84, then what are the costs of book A and book B, respectively?

A

₹14 and ₹42

B

₹24 and ₹42

C

₹14 and ₹7

D

₹28 and ₹14