$>$ An average human will exhale $1$ kg of CO$2$ per day.

A$.$ Find the number of kilograms of methane that would have to be combusted to produce the same amount of CO$2.$ Assume the specific energy density of methane is $50$ MJ$/$kg$.$

B$.$ How much energy $($in kWh$)$ is released if this amount of methane is combusted? Assume the specific energy density of methane is $50$ MJ$/$kg$.$