The Nurse Is Listening to the Fetal Heart Tones of a Client

The nurse is listening to the fetal heart tones of a client at 37 weeks' gestation while the client is in a supine position. The client states, "I'm getting lightheaded and dizzy." What is the nurse's best action?

A) Assist the client to sit up.
B) Remind the client that she needs to lie still to hear the baby.
C) Help the client turn onto her left side.
D) Check the client's blood pressure.