Let and Compute the Riemann Sum of F Over

Let and compute the Riemann sum of f over the interval [1, 2] , using Two subintervals of equal length (n = 2) .
Five subintervals of equal length (n = 5) .
Ten subintervals of equal length (n = 10) .
In each case, choose the representative points to be the midpoints of the subintervals.

A) 7.47 sq units; 7.4925 sq units; 7.3125 sq units;
B) 7.4925 sq units; 7.47 sq units; 7.3125 sq units;
C) 7.3125 sq units; 7.4925 sq units; 7.47 sq units;
D) 7.3125 sq units; 7.47 sq units; 7.4925 sq units;