If a stock went up from $$43\mathrm{.}60$ to $$52\mathrm{.}90$ last month, and the S&P$500($representing the market$)$ went down from $3,540$ to $3,030$ last month, what would be the implied beta for the stock $($if this is the only information you have$)?$

a$.-0\mathrm{.}68$

b$.0\mathrm{.}68$

c$.-0\mathrm{.}02$

d$.-1\mathrm{.}48$

e$.$ None of the above is within $10$ of the correct answer.