Spring tides--

Select one:

Aoccur at new and full moons, and have the highest high tides and lowest low tides.
Boccur at first- and third-quarter moons, and have the lowest high tides and highest low tides.
Coccur at new and full moons, and have the lowest high tides and highest low tides.
Doccur at first- and third-quarter moons, and have the highest high tides and lowest low tides.