Investors bought a put with a strike price of $$49\mathrm{.}50$ for $$8\mathrm{.}50.$ At what price of the underlying stock will they start to make a profit on the investment?

a$.$

$$58\mathrm{.}00$

b$.$

$$41\mathrm{.}00$

c$.$

$$32\mathrm{.}50$

d$.$

$$49\mathrm{.}50$