The elastic potential energy of a strained body is

• Correct answer
  A

  \(\frac{1}{2} \times\) stress \(\times\) strain
• B

  \(\frac{1}{2} \times\) stress \(\times\) strain \(\times\) volume of the body
• C

  \(\frac{1}{2} \times\) stress \(\times\) strain \(\times\) area of the body
• D

  stress \(\times\) strain \(\times\) volume of the body

Hence, the correct answer is option: 'A'.