Given the following graph:

Which of the following summary statements upholds integrity in data reporting?

A. Sales are approximately equal for Product A and Product B across all strategies.
B. Strategy 4 provides the best sales in comparison to other strategies.
C. While Strategy 2 does not result in the highest sales of Product D, over all products it appears to be the most effective.
D. Product D should be promoted more than the other products in all strategies.