Problem 3 (50 pts) Derive a Boolean expression for a voting machine which allows three persons to vote. The output is either yes or no dependent on the number of persons voting yes. Two restrictions: 1. No abstain allowed. That is each person has to vote either yes or no. 2. The outcome is yes if two or more yes votes; otherwise, the outcome is no. Derive a sum-of-product format first and then use Karnaugh maps to simplify the expression