Jose Calls You at the Help Desk Because He Is

Multiple Choice

Jose calls you at the help desk because he is having a problem logging on to his laptop computer. After several unsuccessful attempts to enter his password, he asks you to reset the password because he must have forgotten it. You reset his password, and he types it, but again the computer rejects it. Jose assures you that he typed the correct user name and password. You ask him what type of computer he is using, and he tells you a laptop. 
What might be the problem with Jose's computer?

A) Keyboard is not working.
B) OS is corrupt.
C) Keyboard is in the wrong language.
D) Num Lock key is on.