Subject :IMO Class : Class 6

Arrange the following steps of construction of an angle 120° in a correct order.
**Steps of construction:**

(1) Draw a ray PQ.

(2) With B as a centre, again draw an arc to intersect the first arc at C.

(3) With P as a centre and a convenient radius, draw
an arc to intersect at A.

(4) Join CP to get the required angle. ∠CPQ measures 120°.

(5) With A as a centre, draw an arc with the same
radius to intersect the previous arc at B.

A(1)-(4)-(2)-(3)-(5)

B(1)-(3)-(5)-(2)-(4)

C(1)-(2)-(3)-(5)-(4)

D(1)-(3)-(2)-(5)-(4)