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If y = 4x-5 is a tangent to the curve y^...

If y = 4x-5 is a tangent to the curve `y^(2) = ax^(3)+b` at (2,3) then

A

a = 2, b =-7

B

a = -2, b =7

C

a =-2, b =-7

D

a = 2, b = 7

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