. –Mary, is this ______ umbrella?

--No, it’s not mine. It is _______.

A．you; hers

B．your; hers

C．yours ; her

D．your; her

下列试剂能一次性鉴别出NaCl、稀盐酸、CaCl₂三种溶液的是（　　）

A．Na₂CO₃溶液

B．澄清石灰水

C．酚酞试液

D．紫色石蕊试液