Subject :IMO Class : Class 7

In which of the following options, a unique
triangle cannot be drawn?

APQ = 6 cm, QR = 9 cm and RP = 4 cm

BQR = 10 cm, ∠Q = 70° and ∠R = 60°

CAn equilateral triangle with the length of side 5 cm.

DAn isosceles triangle with the length of each equal side 4 cm.