The relationship between a store's profit y and sales x is
What's the sales volume of this week?
1: This week's sales were three more than that of the last week.
2: This week's profit was $30 more than that of the last week.
AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
CBoth statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
DEACH statement ALONE is sufficient.
EStatements (1) and (2) TOGETHER are NOT sufficient.