(A) is correct -> Marginal Utility is change -> in Total Utility.
(B) is wrong -> Indifference Curves do -> not intersect each other.
(C) is correct -> Marginal Utility becomes -> Zero at constant Total Utility.
(D) is wrong -> Diminishing Marginal Rate -> affects Indifference Curve.
(E) is correct -> Indifference Curve slopes -> downwards from left to right.