A Patient States,"Whenever I Open My Mouth Real Wide,I Feel

A patient states,"Whenever I open my mouth real wide,I feel this popping sensation in front of my ears." To further examine this,the nurse would:

A) Place the stethoscope over the temporomandibular joint, and listen for bruits.
B) Place the hands over his ears, and ask him to open his mouth "really wide."
C) Place one hand on his forehead and the other on his jaw, and ask him to try to open his mouth.
D) Place a finger on his temporomandibular joint, and ask him to open and close his mouth.