Mercaptans are added to liquefied petroleum gas (LPG) to
(A) Reduce its cost
(B) Narrow down its explosion limit
(C) Assist in checking its leakage from cylinder
(D) Increase its calorific value
(A) Reduce its cost
(B) Narrow down its explosion limit
(C) Assist in checking its leakage from cylinder
(D) Increase its calorific value