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# Statement (S) : In gastropods, due to torsion mantle cavity is placed anteriorly behind and above the head. Reason (R) : During larval stage, visceral mass, shell and mantle cavity are twisted upto $180^{\circ}$ counter clockwise with respect to the head and foot.

(1) Both (S) and (R) are true, and (R) is not the correct explanation to (S)

(2) (S) is correct, but (R) is not correct

(3) (S) is not correct, but (R) is correct

(4) Both (S) and (R) is correct, and (R) is the correct explanation to (S)

(4) Both (S) and (R) are correct, and (R) is the correct explanation to (S)