Which of the following statements is incorrect?

• A
  $H_2O_2$ is a pale blue viscous liquid.
• B
  $H_2O_2$ acts as both an oxidizing and a reducing agent.
• C
  In $H_2O_2$,the two hydroxyl groups are in the same plane.
• D
  The structure of $H_2O_2$ is like an open book.