Tide

-10123timenoonmidnightheight of tide4:30 a.m.0.4 ftnoon2.1 ft6:30 p.m.0.2 ftTides at Henlopen Park on October 25
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 October 25 at Henlopen Park?
A. 1.9
B. 1.7
C. 1.8
D. 1.6
E. 2