Tide

-10123timenoonmidnightheight of tide5.30 a.m.0.2 ft11:30 a.m.2.4 ft6:30 p.m.0.1 ftTides at Henlopen Park on April 20
The graph above shows the height of the tide, in feet, above or below a baseline. Which of the following is closest to the difference, in feet, between the heights of the highest and lowest tides on April 20 at Henlopen Park?
A. 2.3
B. 2.2
C. 2.6
D. 2.5
E. 1.8