Identify the correct sentence.
a) Wilma does'nt have too much trouble distinguishing between "their, there, and theyre."
b) Wilma doesn't have too much trouble distinguishing between their, there, and they're.
c) Wilma doesn't have too much trouble distinguishing between their, there, and they're. d) Wilma doesn't have too much trouble distinguishing between "their, there, and they're".