For question $1,$ use the following cash flows for projects A and B: A: $(-$$ $2,000,$ $ $500,$ $ $600,$ $ $700,$ $ $800)$ B: $(-$$ $2,000,$ $ $950,$ $ $850,$ $ $400,$ $ $300)$ DO NOT USE EXCEL $(1\mathrm{.}1)$ If the discount rate is $12\%,$ what is the discounted payback period for project A$?$ For Project B$?(1\mathrm{.}2)$ Calculate the internal rate of return for projects A and B$.(1\mathrm{.}3)$ If A and B are mutually exclusive projects and the required rate of return is $5\%,$ which should be accepted? $(1\mathrm{.}4)$ If the discount rate is $12\%,$ and A and B are mutually exclusive, which project should be accepted? $(1\mathrm{.}5)$ At what discount rate will we be indifferent between A and B$?$