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 username 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$.$

OS is corrupt.

b$.$

Num Lock key is on$.$

c$.$

Keyboard is not working.

d$.$

Keyboard is in the wrong language.