Mutually exclusive projects$)$ Nanotech, Inc. currently has an electronics production facility, and it is cost$-$prohibitive to expand this production facility. Nanotech

is deciding among the following four contracts:

CONTRACT$$S NPV USE OF PRODUCTION FACILITY

A $$100$ million $100\%$

B $ $90$ million $80\%$

C $ $60$ million $60\%$

D $ $50$ million $40\%$

Which project or projects should Nanotech accept?