A、<img src="https://learning.mhtall.com/upload/uc_course/1843/16ABF945A4301A732AF38E3B0677A9D79D055977.png" alt="">
B、<img src="https://learning.mhtall.com/upload/uc_course/1843/E974C3CBF43A59171520AA4779A4C667509243EF.png" alt="">
C、<img src="https://learning.mhtall.com/upload/uc_course/1843/6D7FD2C3EDAA6E0EC5284A9AC68F05E507E33328.png" alt="">
D、<img src="https://learning.mhtall.com/upload/uc_course/1843/BAB5C539682D77636F03F891F59D432873FC5832.png" alt="">