Select the correct option regarding the following statements:
$(1)$ During glycolysis/fermentation,$2 \, ATP$ molecules are produced from one molecule of glucose.
$(2)$ If the respiratory substrate is fat/carbohydrate,the $RQ$ of the respiring cells is less than one.

• A
  Statement $(1)$ is correct,Statement $(2)$ is incorrect.
• B
  Statement $(1)$ is incorrect,Statement $(2)$ is correct.
• C
  Both statements $(1)$ and $(2)$ are correct.
• D
  Both statements $(1)$ and $(2)$ are incorrect.