Feeble pulse and forceful pulse are a pair of programmatic pulse to distinguish__? A: the disease location of exterior and interior B: the disease nature of cold and heat C: the evil and health of asthenia and sthenia D: the severity of illness

Which of the following is true about retarded pulse? A: The pulse rate is less than 60 beats per minute. B: The pulse is slow and forceful and it’s seen in sthenia cold syndrome due to pathogenic cold attack. C: The pulse is slow and weak and it’s seen in athenia cold syndrome due to yang deficiency. D: It can be seen in athletes.