Which statement correctly describes SQL and /SQL*Plus?

Which statement correctly describes SQL and /SQL*Plus?

A.
Both SQL and /SQL*plus allow manipulation of values in the database.

B.
/SQL*Plus recognizes SQL statements and sends them to the server;
SQL is the Oracle proprietary interface for executing SQL statements.

C.
/SQL*Plus is a language for communicating with the Oracle server to access data;
SQL recognizes SQL statements and sends them to the server.

D.
SQL manipulates data and table definitions in the database;
/SQL*Plus does not allow manipulation of values in the database.