`triangle ABC ~ triangle PRQ` and PQ = 4 cm, QR = 7 cm and PR = 8 cm. If `ar(triangle ABC) :ar(triangle PRQ)` = 1 : 4 , then AC is equal to :
`triangle ABC ~ triangle PRQ` है और PQ =4 cm, QR = 7 cm तथा PR = 8 cm है । यदि `ar(triangle ABC) :ar(triangle PRQ)` = 1 : 4 है, तो AC का मान क्या होगा ?

Options

A. a)4 cm
B. b)3.7 cm
C. c)1 cm
D. d)2 cm