Let $h$ be a twice continuously differentiable positive function on an open interval $J.$ Let $g(x) = \ln(h(x))$ for each $x \in J$. Suppose $(h'(x))^2 > h''(x) h(x)$ for each $x \in J$. Then

  • A
    $g$ is increasing on $J$
  • B
    $g$ is decreasing on $J$
  • C
    $g$ is concave up on $J$
  • D
    $g$ is concave down on $J$

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