Is it me or this Q is unfair difference, investment, business, between, someone

nixie24

Question ID: 20061
According to the Keynesian view, the business cycle can most accurately said to be driven by:
A. fluctuations in consumer spending.
B. fluctuations in investment.
C. changes in consumer spending.
D. movements in imports/exports.

Can someone explain the difference between A and C ?? I'd rather toss a coin ...
(ok in the real thing we will have only 3 choices)