Consider the Region Between the Graph Of $f ( x ) = \sqrt { x - 1 }$

Multiple Choice

Consider the region between the graph of $f ( x ) = \sqrt { x - 1 }$ and the x-axis on the interval [1, 5].
-Using four shells approximate the volume of the solid that is obtained by revolving this region around the x-axis.

A) 9.25 $\pi$
B) 8.25 $\pi$
C) 10.25 $\pi$
D) 7.25 $\pi$