Tide

-10123timenoonmidnightheight of tide3.30 a.m.0.2 ftnoon2.2 ft7 p.m.-0.3 ftTides at Henlopen Park on September 7
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 September 7 at Henlopen Park?
A. 2.5
B. 2
C. 1.6
D. 1.7
E. 2.4