You expect General Motors $($GM$)$ to have a beta of $1\mathrm{.}3$ over the next year and the beta of Exon Mobil $($XOM$)$ to be $0\mathrm{.}9$ over the next year. Also, you expect the volatility of General Motors to be $40\%$

and that of Exxon Mobil to be $30\%$ over the next year. Which stock has more systematic risk? Which stock has more total risk?

A$.$ XOM, XOM

B$.$ XOM, GM

c$.GM,$xOM

D$.GM,GM$