Identify P, Q and R in the given figure and select the option that correctly mentions their function.
AP-Controls heartbeat, Q-Maintains balance and posture, R-Controls learning ability
BP-Controls learning ability, Q-Maintains balance posture, R-Controls and heartbeat
CP-Controls learning ability, Q-Controls heartbeat, R-Maintains balance and posture
DP-Maintains balance and posture, Q-Controls learning ability, R-Controls heartbeat