Jean Tremblay's Disposable Income Rose from $40 000 Per Year

Jean Tremblay's disposable income rose from $40 000 per year to $42 000 and his desired consumption expenditure rose from $38 000 to $39 600. It can be concluded that his

A) marginal propensity to consume increased from 0.050 to 0.058.
B) marginal propensity to save is 0.80.
C) average propensity to consume decreased from 0.950 to 0.943.
D) marginal propensity to consume is 0.050.
E) average propensity to save decreased from 0.950 to 0.943.