Which of the following case (s) represent (s) textural inversion in sandstone?

Q. Which of the following case (s) represent (s) textural inversion in sandstone?

Case I: Rounded grains in clayey matrix.

Case II: Rounded, but poorly sorted grains.

(A) Only case I.

(B) Only case II.

(C) Both cases I and II.

(D) Neither case I nor case II.

Ans: Both cases I and II.
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