Which API must an EJB 3.1 container make available to enterprise beans at runtime?

Which API must an EJB 3.1 container make available to enterprise beans at runtime? (Choose
one)

A.
The JXTA 1.1 API

B.
The MIDP 2.0 API

C.
The Java SE 6 JNDI API

D.
The Java SE 5 JDBC API