Nuclear weapons produce lethal levels of heat and blast, produce radiation and radioactive fallout, exterminate civilian populations, produce social disintegration, contaminate and destroy the food chain, and continue for decades after their use to induce health-related problems.
Can we infer the following?
Even 20 years after detonation, nuclear weapons still have health effects.

Choices:
(1). Yes;
(2). It's impossible to say;
(3). No;
The answer is: