Use the following information for questions $36-48$

Transcendent Technologies is deciding between developing a complicated thought$-$activated software, or a simple voice$-$activated software. Since the thought$-$activated software is complicated, it only has a $30\%$ chance of actually going through to a successful launch, but would generate revenues of $$50$ million if launched. The voice$-$activated software is simple and hence has a $80\%$ chance of being launched but only generates a revenue of $$10$ million. The complicated technology costs $10$ million, whereas the simple technology costs $2$ million.

Launching the simplified version would be a mistake for probabilities less than

a$.0\mathrm{.}6$

b$.0\mathrm{.}7$

c$.0\mathrm{.}8$

d$.1\mathrm{.}0$