Context: Read the text about a person in motion.
Zach rode an escalator from the first floor to the second floor of a shopping mall.
Complete the statement. Assume that Zach's mass did not change.
The gravitational potential energy stored between Zach and Earth () as he rode the escalator.
A. decreased
B. increased
C. stayed the same
Select the correct answer from the given choices and respond with the letter of the chosen option.

B