(A). is correct option.
Explanation:
Strong nuclear force :
There are four fundamental forces in the universe.
1. Strong nuclear force
2. Weak nuclear force
3. Gravitational force
4. Electromagnetic force
Strong nuclear force is 137 times strong as electric force and 1 million times strong as weak interaction force.
The range of strong force is .
Strong nuclear force is the attractive force which acts on the neutrons and protons in the nucleus. It acts on shorter distance.
It is more than 100 times strong than the electric force of repulsion.
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