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In a village, farmers use chemical fertilizers in their fields. A considerable increase in soil pollution was noticed as the farming activity intensified. What could be the most likely reason for this ?

A)  Chemicals used to destroy weed and pest are polluting the field.

B)  Living organisms used in fertilizers are polluting the land.

C)  Smoke particles from the industry got settled in moist surroundings of the field.

D)  Both (a) and (c)