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The curve y = ax^(3) +bx^(2) +cx +5 touc...

The curve `y = ax^(3) +bx^(2) +cx +5` touches the x-axis at A(-2,0) and cuts the y-axis at a point B where its slope is 3. Then

A

a = 1/2, b = -3/4, c = 3

B

a = -1/2, b = -3/4, c = 3

C

a = 1/2, b = 3/4, c = 3

D

a = -1/2, b = 3/4, c= 3

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The correct Answer is:
B
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