Which one of the following problems is most suitable for analysis by engineering economic analysis?

(a) Some 45jt candy bars are on sale for 12 bars for $3. Sandy, who eats a couple of candy bars a week, must decide whether to buy a dozen at the lower price.

(b) A woman has $150,000 in a bank checking account that pays no interest. She can either invest it immediately at a desirable interest rate or wait a week and know that she will be able to obtain an interest rate that is 0.15% higher.

(c) Joe backed his car into a tree, damaging the fender. He has automobile insurance that will pay for the fender repair. But if he files a claim for payment, they may change his "good driver" rating downward and charge him more for car insurance in the future.