You are thinking about registering for at most two courses on Summer 2017. There are four courses that you are interested in, which could be taught by three professors (they can teach any of these courses.) Based on your experience and conversations with your colleagues with these courses and professors, you have work a "complexity table" (shown below) that summarizes the expected difficulty of each course. Explain which two courses you should register. Course Professor 1 Professor 2 Professor 3 81 70 80 2 80 82 81 3 91 89 90 84 86 83