Approximate the Area Under the Curve and Above The $x$ -Axis Using

Multiple Choice

Approximate the area under the curve and above the $x$ -axis using $n$ rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.
- $f(x) =x^{2}+2$ from $x=1$ to $x=4 ; n=6$

A) 30.875
B) 28.875
C) 24.875
D) 26.875