You’d better add more details to the second option to make it fair, there’s a cognitive bias that leads to a more detailed option being more believable.
The first option while more detailed focused entirely on advances in computing and digital signal processing; this was mostly unknown to laypeople in the seventies. So despite the level of detail, it’s likely that random people on the street would have considered the second option more likely / true, since the space race and Cold War were front-page news every day.
