Which of these statements is true?

A) PHP interfaces to the MySQL database,and you should transfer any data in Oracle or Sybase to MySQL if you want to use PHP on the datA.

B) PHP interfaces to a number of relational databases such as MySQL, Oracle and Sybase. A wrapper layer is provided so that code written for one database can easily be transferred to another if you later switch your database engine.

D) There's little code in PHP to help you interface to databases, but there's no reason why you can't write such code if you want to.