What tide of tide is it called when two high tides and two low tides of approximately equal size occur?

What tide of tide is it called when two high tides and two low tides

1.	What tide of tide is it called when two high tides and two low tides of approximately equal size occur?
A.	Diurnal tide
B.	Spring tide
C.	Neap tide
D.	Semi-Diurnal tide
Answer» E.