Question Number 65427 by byaw last updated on 29/Jul/19
Commented by Rio Michael last updated on 30/Jul/19
$$\left.{B}\right)\:{because}\:\:{p}\:\rightarrow{q}\:\equiv\:\sim{q}\:\rightarrow\sim{p} \\ $$$$\:\:{which}\:{is}\:``\mathrm{Dede}\:\mathrm{did}\:\mathrm{not}\:\mathrm{score}\:\mathrm{a}\:\mathrm{goal}\:\mathrm{then},\:\mathrm{he}\:\mathrm{did}\:\mathrm{not}\:\mathrm{train}\:\mathrm{hard}'' \\ $$