Two functions $f$ and $g$ have first and second derivatives at $x = 0$ and satisfy the relations: $f(0) = \frac{2}{g(0)}$,$f'(0) = 2g'(0) = 4g(0)$,$g''(0) = 5f''(0) = 6f(0) = 3$. Then:

  • A
    If $h(x) = \frac{f(x)}{g(x)}$,then $h'(0) = \frac{15}{4}$
  • B
    If $k(x) = f(x) \cdot g(x) \sin x$,then $k'(0) = 2$
  • C
    $\lim_{x \to 0} \frac{g'(x)}{f'(x)} = \frac{1}{2}$
  • D
    All of the above

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