If e^(lamda) and e^(-lamda) are the root...

If `e^(lamda) and e^(-lamda)` are the roots of `3x^(2)-(a+b)x+2a=0, a, b, lamda in R,`
`lamda ne 0` then least integral value of b is

A

4

B

5

C

9

D

10

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The correct Answer is:

B

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