Approximate the Area of the Region Under the Function Below $[ 0,2 ]$

Multiple Choice

Approximate the area of the region under the function below on the interval $[ 0,2 ]$ using 8 rectangles. Round your answer to two decimals.
$$f ( x ) = \frac { 1 } { 3 } x ^ { 4 }$$

A) $5.71$ square units
B) $2.86$ square units
C) $3.69$ square units
D) $8.57$ square units
E) $17.13$ square units