Answer :
I know this...it is B.
I watched the Kennedy programmes on TV, and this came up.
the reason being that JFK won is that, those who watched the debates live felt that JFK was far better at the debates, as Nixon seem to look nervous and restless, as he was also seen sweating during the time JFK talks.
however, those listening to the radio felt that Nixon was far better, as they didn't see how nervous he looked....so, more people had TVs than Radios...meaning that Nixon lost to Kennedy! It was the best debate of all time!