**Concept:** **The question tests on Probability**

**Solution:**

This question is a special case of percentage increase and decrease. (There are 2 of them)

Since she has to reduce the consumption, we have to find the % decrease.

Let Original price = 100. Therefore New price = 107

% Decrease = Difference/Larger Number∗100

=7/107∗100

=700/107%

**Option A**