Q2: You are considering changing heaters for your company headquarters because the current one is no longer operational. There are two possible options. Option A will require an investment of $30,000 and is estimated to save $3,000 annually with a 5-year estimated useful life. The salvage value for option A is $2,000. Option B will require an investment of $55,000 and is expected to save $5,000 annually with a 10-year useful life. The salvage value for option B is $3,000. Assume the MARR is 10%. Question 5 4 pts When the useful lives of alternatives differ, we can use of their useful lives O Least common multiple Greatest common divisor O An analysis period that is equal to any of the alternatives' lives O The longest period from the alternatives Question 6 4 pts Based on your answer in last question, what would be the analysis period we would need to for this problem? Question 7 4 pts What is the present worth of Option A considering an analysis period of 10? Question 8 What is the present worth of Project B? Question 9 Which option should you select? O Option A Option B Do nothing O There is not enough information to select