If P(1, 2), Q(4, 6), R(5, 7) and S(a, b...

If P(1, 2), Q(4, 6), R(5, 7) and S(a, b) are the vertices of a parallelogram PQRS, then

A

a = 2, b = 4

B

a = 3, b = 4

C

a = 2, b = 3

D

a = 3, b = 5

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The correct Answer is:

C

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