Given below are two statements, one labelled as Assertion (A) and the other labelled as **Reason (R):** Assertion (A):** Thermal pollution from industrial cooling water discharge decreases the dissolved oxygen (DO) content of a water body while simultaneously increasing the biological oxygen demand (BOD) of aquatic organisms. **Reason (R):** The solubility of oxygen in water increases with an increase in temperature, while the metabolic rate of ectothermic aquatic organisms decreases. Select the correct answer using the codes given below:

Options:

• A: Both A and R are true and R is the correct explanation of A.
• B: Both A and R are true but R is not the correct explanation of A.
• C: A is false but R is true.
• D: A is true but R is false.

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