The base of a solid S is the region enclosed by the graph of y = ln x, the line x = e, and the x-axis. If the cross sections of S perpendicular to the x-axis are squares,

which of the following gives the best approximation of the volume of s?

A) 0.718

B) 1.718

C) 2.718

D) 3.171

E) 7.388