The width of a rectangle measures (7.5b + 5.5c) centimeters, and its length measures (2.9b + 5.9c) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle? 
a) 17.4b + 11.4c 
b) 10.4b + 11.4c 
c) 10.4b + 11.8c 
d) 17.4b + 11.8c