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

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

A) 33.27 $\pi$
B) 46.27 $\pi$
C) 53.27 $\pi$
D) 36.27 $\pi$