What effect does the sun have on Earth's tides? A. The pull of the sun cancels the pull of the moon when they are on opposite sides of Earth, causing lower high tides. B. The pull of the sun combines with the pull of the moon when they form a right angle with Earth, causing very high tides. C. The pull of the sun cancels the pull of the moon when they form a right angle with Earth, causing very high tides. D. The pull of the sun combines with the pull of the moon when they are on the same side of Earth, causing very high tides.