Based on the following chart of nuclear weapons and nuclear weapons history of the “nuclear club”, what can you infer about the birth of nuclear weapons?

a) beginning in the 1940s, both the united states and the united kingdom lead the way in successfully testing nuclear weapons

b) beginning in the 1940s, both the united states and russia lead the way and successfully testing nuclear weapons

c) beginning in the 1940s, russia was the first country to successfully tess a nuclear warhead.

d) beginning in the 1940s, both the united states and china lead the way in successfully testing nuclear weapons.

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