When an Antibody Titer to Varicella Zoster Virus Is Performed

When an antibody titer to varicella zoster virus is performed on a nurse,the titer is negative.Which result and action by the nurse's supervisor are most appropriate?

A) The nurse has chickenpox and is contagious. The supervisor sends the nurse home.
B) The nurse has never been infected with varicella zoster virus. The supervisor assigns another nurse to care for clients with chickenpox.
C) The nurse had a subclinical case of herpes at least 5 years ago and is now immune to the disease. The supervisor assigns the nurse to a client with chickenpox.
D) The nurse has never been infected with varicella zoster virus and is susceptible to herpes. The supervisor assigns another nurse to a client with herpes.