A company has computed that their "MARGIN" is $\mathrm{.}44.$ Which of the following statements is the best interpretation of this result?

$$

a$.$

Every $$1$ invested in controllable assets generates $$0\mathrm{.}44$ in controllable income.

b$.$

Every $$1$ earned in controllable revenue generates $$0\mathrm{.}44$ in controllable income.

c$.$

Every $$1$ invested in controllable assets generates $$0\mathrm{.}44$ in controllable revenue.

d$.$

Every $$1$ earned in controllable revenue generates $$0\mathrm{.}44$ of segment margin.