Inc. which currently has a capital structure that is $40\%$ debt and $60\%$ equity has an asset beta of $1\mathrm{.}55$ what is the firm's equity beta? ignore taxes a$)2\mathrm{.}583$ b$)\mathrm{.}930$ c$)1\mathrm{.}352$ d$)3\mathrm{.}875$ e$)4\mathrm{.}079$