To solve this problem, we need to analyze both the assertion and the reason and verify their correctness as well as the linkage between them.
The correct option is: "Both A and R are correct and R is the correct explanation of A."
A 2 $\text{kg}$ mass is attached to a spring with spring constant $ k = 200, \text{N/m} $. If the mass is displaced by $ 0.1, \text{m} $, what is the potential energy stored in the spring?
