What's the Relationship Between Total Utility (TU) and Marginal Utility

Multiple Choice

What's the relationship between total utility (TU) and marginal utility (MU) ?

A) MU of a good is the sum of its TU, assuming that TU is positive
B) MU is the change in TU divided by the change in quantity
C) MU is TU divided by the quantity of goods consumed
D) TU of a good is the sum of all changes in the MUs of that good
E) MU = TU as long as the change in TU is constant