In a recent election, there were two propositions on the ballot, Prop A and Prop B. During exit polling, 250 voters were surveyed with the following results 189 voted for Prop A, 96 voted for both Prop A and Prop B 54 voted for neither Prop A nor Prop B. 7. How many surveyed voted for exactly one proposition?

a. 150
b. 61
c. 100
d. 103
e. 147