This question has Statement-$1$ and Statement-$2$. Of the four choices given after the statements, choose the one that best describes the two statements.
Statement-$1$: $A$ point particle of mass $m$ moving with speed $u$ collides with a stationary point particle of mass $M$. If the maximum energy loss possible is given as $f \left( \frac{1}{2} m u^2 \right)$, then $f = \left( \frac{m}{M + m} \right)$.
Statement-$2$: Maximum energy loss occurs when the particles get stuck together as a result of the collision.

• A
  Statement-$1$ is true, Statement-$2$ is true; Statement-$2$ is the correct explanation of Statement-$1$.
• B
  Statement-$1$ is true, Statement-$2$ is true; Statement-$2$ is not the correct explanation of Statement-$1$.
• C
  Statement-$1$ is false, Statement-$2$ is true.
• D
  Statement-$1$ is true, Statement-$2$ is false.