How many statements are correct ?
(a) R–X reacts with AgNO₂ give nitro alkane as Major product.
(b) Et–Cl on reaction with dry Ag₂O give Et–O–Et
(c) t-butyl chloride give  white ppt. with aq. AgNO₃
(d) CH₃ – CH₂ – Cl gives ethane isonitrile on reaction with AgCN
(e) Me–O–Et on reaction with PCl₅ give Me–Cl and Et–Cl.