Guizhi is acrid, sweet and warm. It belongs to heart, lung and bladder meridians. It has the function of inducing perspirations and relieving cold symptoms.
选项：

A:桂枝味辛甘，性温。归心、肺、膀胱经，有发汗散寒的功效。
B:桂枝既酸甜又性热。属于心、肺、肾系统，有清热燥湿的功效。
C:桂枝味苦咸性寒。在心、肺、大肠内，有软坚散结的功效。