Combining the creation of many similar products into one relevant measure of activity is called __________________; translating that value into individual estimates corresponding to specific products is called ________________________. Select the terms below that fit these blanks best. Select one or more:

a. Composite analysis; Decomposition.
b. aggregation; disaggreation.
c. disaggregation; aggregation.
d. Decomposition; Composite analysis.
e. None of these answers is correct.