As Beowulf tries to make himself coffee in the common area, he notices that the sole machine is damaged no longer works. If it takes 2 minutes for the machine to brew a cup, following an exponential distribution, and 20 people per hour want coffee, following a Poisson-distribution, calculate the following: A. The percentage of time that the machine is busy. B. The average number of people waiting in line. C. How long it takes on average to get a cup of coffee. D. The probability that no one is waiting in line for coffee