Martha designed the model shown below to represent the positions of Earth, sun, and moon during tides.
Picture shows sun, moon, and Earth along the same horizontal line.
The model most likely represents the positions of Earth, sun, and moon when there is
A: no effect of the sun on the tides
B: no effect of the moon on the tides
C: least difference between high and low tides
D: greatest difference between high and low tides
