23) Will a mark-sweep approach be able to free these garbage cells? Why or why not? Answer: Reason: 24) What is a downside to the mark-sweep approach of garbage collection? Answer: 25) Your boss says "I want you to find the shortest path that passes through all the Mars alien bases. The objective is to infect each base and thus you cannot return to the same base ever again. I want an algorithm to do it in Polynomial time." What would you say to him? Explain why: (You are given a graph of all of the bases and the distance between each of them) What class of problem does the above fall into