Given below are two statements:
Statement $I$: In an ecosystem,there is a unidirectional flow of energy from the sun through producers to consumers.
Statement $II$: Ecosystems are exempted from the $2^{nd}$ law of thermodynamics.
In the light of the above statements,choose the most appropriate answer from the options given below:

• A
  Both statement $I$ and statement $II$ are correct
• B
  Both statement $I$ and statement $II$ are incorrect
• C
  Statement $I$ is correct but statement $II$ is incorrect
• D
  Statement $I$ is incorrect but statement $II$ is correct