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Two consecutive sides of a parallelogram are 4x + 5y = 0 and 7x + 2y = 0. One diagonal of the parallelogram is 11x+7y=9. If the other diagonal is ax + by + c = 0, then

A

a = -1, b=-1, c = 2

B

a = 1, b =-1, c = 0

C

a = -1, b = -1, c = 0

D

a = 1, b = 1, c= 0

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The correct Answer is:
B
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