Which Statement Regarding EVA Is True

Which statement regarding EVA is true?

A) One way to increase EVA is to achieve the same level of operating income but with more investor-supplied capital.
B) If a firm reports positive net income, its EVA must also be positive.
C) One drawback of EVA as a performance measure is that it mistakenly assumes that equity capital is free.
D) One way to increase EVA is to generate the same level of operating income but with less investor-supplied capital.