In the Following Equation, What Does the X Stand For $$\text { elastic energy } = \frac { 1 } { 2 } k x ^ { 2 }$$

Multiple Choice

In the following equation, what does the x stand for? $$\text { elastic energy } = \frac { 1 } { 2 } k x ^ { 2 }$$

A) deflection of spring from its unstretched position
B) original length of unstretched spring
C) spring force
D) a generic unknown quantity