Neap Tides Occur ________

Neap tides occur ________.

A) once a month when the Earth-Sun and Earth-Moon lines are at an angle of 45° to each other
B) twice a month when the Earth, Sun and Moon are fully aligned
C) once a month when the Earth, Sun and Moon are fully aligned
D) twice a month when the Earth-Sun and Earth-Moon lines are at a right angle to each other
E) once a month when the Earth-Sun and Earth-Moon lines are at a right angle to each other