El Capitan Foods has a capital structure of $35\%$ debt and $65\%$ equity, its tax rate is $25\%,$ and its beta $($leveraged$)$ is $1\mathrm{.}45.$ Based on the Hamada equation, what would the firm's beta be if it used no debt, i$.$e$.,$ what is its unlevered beta, bU$?$

a$.0\mathrm{.}61$

b$.1\mathrm{.}15$

c$.1\mathrm{.}03$

d$.1\mathrm{.}28$

e$.0\mathrm{.}94$