Using the Profitability Index rule, which of the four projects is the best investment?

$\backslash$table$[[$Project$,$NPV$,$Investment$],[$A$,$$$3\mathrm{.}6$ million,$$4\mathrm{.}1$ million$],[$B$,$$$2\mathrm{.}5$ million,$$3\mathrm{.}8$ million$],[$C$,$$$4\mathrm{.}8$ million,$$6\mathrm{.}9$ million$],[D,$$$5\mathrm{.}7$ million,$$8\mathrm{.}9$ million$]]$

Multiple Choice

Project C

Project D

Project A

Project B