CTET Class I to V 11 Jan 2022 Paper

Consider the following statements about the earthworms:
A. Earthworm make tunnels in the fields which provide easy passage to air and water into the soil.
B. Earthworms soften the soil by digging underneath.
C. Earthworms save the main crops from weeds.
D. The droppings of the earthworms fertilise the soil.
The true statements are