Explain the moisture regain and moisture content and also deduce the relationship between two.
a) Moisture regain refers to the amount of moisture absorbed by a material under specific conditions, while moisture content indicates the actual amount of moisture present in the material.
b) Moisture regain and moisture content are two unrelated concepts.
c) Moisture regain and moisture content both measure the same property of a material.
d) Moisture regain refers to the moisture content of a material, and there's no relationship between them.