The value of $\lambda $, for which the line $2x - \frac{8}{3}\lambda y = - 3$ is a normal to the conic ${x^2} + \frac{{{y^2}}}{4} = 1$ is
The value of $\lambda $, for which the line $2x - \frac{8}{3}\lambda y = - 3$ is a normal to the conic ${x^2} + \frac{{{y^2}}}{4} = 1$ is
- A
$\frac{{\sqrt 3 }}{2}$
- B
$\frac{1}{2}$
- C
$ - \frac{{\sqrt 3 }}{2}$
- D
$\frac{3}{8}$
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