Tide

-10123timenoonmidnightheight of tide5 a.m.-0.5 ftnoon2 ft6 p.m.-0.1 ftTides at Sandy Point on March 23
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 March 23 at Sandy Point?
A. 2.5
B. 2.1
C. 2.9
D. 2.2
E. 1.7