The following graph details the number of performances of plays a Shakespearean acting company has performed over the past five years. 2007-16-02-00-00_files/i0040000.jpg If the company has performed 147 times in the past five years, how many times have they performed Othello? Round to the nearest whole performance, if necessary.

a.
51
b.
28
c.
19
d.
7