Surf Boards,Inc

Surf Boards,Inc.had the following summarized results for the month ending July 30: Assume that an additional 10 surfboards were sold at the regular price,during additional store opening hours.What is the most appropriate conclusion in the report to management?

A) The budget should be updated to take into account the change.
B) The additional hours were needed,as net income increased.
C) An analysis of the differential costs of the additional store hours should be undertaken prior to drawing a conclusion as to the success of the change.
D) All of these.