Low temperature oxidation of stored coal results in the
(A) Decrease in its caking power & calorific value
(B) Decrease in its carbon & hydrogen content
(C) Increase in its oxygen content
(D) All (A), (B) and (A)
(A) Decrease in its caking power & calorific value
(B) Decrease in its carbon & hydrogen content
(C) Increase in its oxygen content
(D) All (A), (B) and (A)