Choose the best option to complete the second sentence so that it has a similar meaning to the first.

Climbing without a safety rope is forbidden.

---> You ________________________________________________

• A. 
   aren't allowed to climb without a safety rope.
• B. 
  don't permit to climb without a safety rope.
• C. 
  aren't forbidden climbing without a safety rope.
• D. 
  had better climb with a safety rope.