If $f$ and $g$ are two increasing functions such that $f o g$ is defined, then which one of the following is correct?

• Correct answer
  A

  $f o g$ is always an increasing function
• B

  $f o g$ is always an decreasing function
• C

  $f o g$ is neither an increasing nor a decreasing function
• D

  None of the above

Hence, the correct answer is option: 'A'.