9. An engineer analyzed four independent alternatives by the present worth method. She used an interest rate of 10% per year, compounded continuously and got the present worth's shown below. On the basis.of her results, the alternative(s) she should select are: Alternative Present Worth, S-5,000 2,000 3,000 1,000 (a) Only D (b) Can't tell from this information (c) All of them (d) Any of them _(e) None of them