As a measure of national income, the relationship between personal income and disposable income is best described as follows:
选项：

A: Personal income is less than disposable income as adjusted for noncorporate revenues .
B: Disposable income is less than personal income as adjusted for personal taxes .
C: Personal income represents earnings from households and noncorporate businesses while disposable income purely represents household income .
D: Personal income is expressed in nominal dollars while disposable income is expressed in constant dollars after adjustment for changes in the consumer price index .