When does spring tide occur
a. they occur when the sun 45° angles from each other this happens once every spring
b. they occur on the date of the vernal equinox each year no matter what stage this is why they are called spring tides
c. they occur when the sun moon and earth are aligned in spite of their name these tides occur twice a year in the spring and fall .
d. they occur when the sun moon and earth are aligned in spite of their name these tides occur all your long ? ( asap )