Context: Two identical greenhouses were next to each other. There were solar panels on the roof of one greenhouse but not on the roof of the other greenhouse. This table shows how the temperature of each greenhouse changed over 2hours.
During this time, thermal energy was transferred from () to ().
A. the surroundings . . . each greenhouse
B. each greenhouse . . . the surroundings
Pick the correct answer from the listed options and provide the letter of the selected option.

A