This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
Option d) is incorrect because the values are not obtained from the deployment descriptor. The values are set in the deployment descriptor but they are made available to the beans at runtime through the JNDI environment. The way it's worded, option d) sounds like "You get the values by reading them from the deployment descriptor" which is not correct.