Which of the following statement$(s)$ is/are correct about diaphragms, cervical caps, and vaults?
$A$. These are barrier methods of contraception.
$B$. They are designed to cover the cervix during coitus to prevent the entry of sperm.
$C$. They provide protection against sexually transmitted diseases $(STDs)$.
$D$. These devices are made of rubber and are reusable.

• A
  $A$ and $B$ only
• B
  $A, B$, and $C$
• C
  $A, B$, and $D$
• D
  $A, B, C$, and $D$