The diagram below shows four beakers of water, P, Q, R and S, at different temperature and volume.
Which one of the following statements is true?
A Beaker P has the most heat energy.
B Beaker R has more heat energy than beaker Q.
C Beaker S has more heat energy than beaker R.
D Beaker P and beaker S have the same amount of heat energy.
a little tricky