The first choice herb which is used to treat Lung dryness and dry cough is （ ）

A、Perillae Fructus (zĭ sū zĭ);

B、Ziziphi spinosae Semen (suān zăo rén);

C、Fritillariae cirrhosae Bulbus
(chuān bèi mŭ);

D、Polygalae Radix (yuăn zhì)