Figure 10-7 the Above Panels Show Various Combinations of Indifference Curves and Combinations

Figure 10-7

The above panels show various combinations of indifference curves and budget constraints for two products: Popcorn and Candy.
-Refer to Figure 10-7.Which diagram demonstrates an increase in total utility following a decrease in the price of popcorn?

A) the movement from d to e in Panel A
B) the movement from f to g in Panel B
C) the movement from h to k in Panel C
D) none of the above