Solve a history multiple-choice question in senior one!

This joke implies that the state-planned economy is more destructive than nuclear weapons. Jokes can't reflect Brezhnev's shrewdness, so don't choose D;

Comprehensive national strength includes economy and so on. And there is no economic strength here, so don't choose C; The weapons mentioned above are mainly used to foil the destructive power of the Planning Commission, and A is not selected, while the Planning Commission is the State Planning Commission, specializing in planned economy, so B is selected.