APS Telephonica is a mobile phone operator that struggles with customer churn. It is known that $41\mathrm{.}2\%$ of smartphone owners and $51\mathrm{.}7\%$ of non$-$smartphone owners leave APS for other mobile phone operators. Suppose $75\mathrm{.}7\%$ of all customers are smartphone owners. What is the probability of owning a smartphone given that a customer left APS?

$\frac{0\mathrm{.}243**0\mathrm{.}517}{0\mathrm{.}757**0\mathrm{.}412+0\mathrm{.}243**0\mathrm{.}517}$

$\frac{0\mathrm{.}757**0\mathrm{.}412}{0\mathrm{.}757**0\mathrm{.}412+0\mathrm{.}243**0\mathrm{.}517}$

$\frac{0\mathrm{.}757**0\mathrm{.}412}{0\mathrm{.}757**0\mathrm{.}588+0\mathrm{.}243**0\mathrm{.}483}$

$\frac{0\mathrm{.}243**0\mathrm{.}483}{0\mathrm{.}757**0\mathrm{.}588+0\mathrm{.}243**0\mathrm{.}483}$