Identify the incorrect statement(s) among the following :
(I) Moist ammonia gas can be dried by using anhydrous `CaCl_(2)`.
(II) When metallic copper reacts with very dilute nitric acid, ammonium nitrite is one of the products.
(III) Phosphine is more soluble in water than `NH_(3)`.
(IV) `NaH_(2)PO_(2)` is an acidic salt and it is named as a sodium hypophosphate.
Correct code is :
A. I and III
B. I and IV
C. II and III
D. All of these
