The Nurse Observes Crusty Brown Lesions Covering a Client's Back

The nurse observes crusty brown lesions covering a client's back. To assist in identifying a possible cause, the most helpful question the nurse would ask the client is

A) "Have you recently changed laundry detergents?"
B) "How much does the rash itch?"
C) "What did the rash look like when you first noticed it?"
D) "What did you eat last night?"