A woman in labor shouts to the nurse, "My baby is coming right now! I feel like I have to push!" An immediate nursing assessment reveals that the head of the fetus is crowning. After asking another staff member to notify the physician and setting up for delivery, which nursing intervention is most appropriate ？（）
A．Gently pulling at the neonate’s head as it’s delivered.
B．Holding the neonate’s head back until the physician arrives.
C．Applying gentle pressure to the neonate’s head as it’s delivered.
D．Placing the mother in a Trendelenburg position until the physician arrives.