Find the total torque exerted on the 3.6-meter-long uniform beam depicted in the provided diagram. Compute the torque with respect to point Q.

• A. 1.9$\times$10² Nm
• B. 1.8$\times$10² Nm
• C. 1.4$\times$10² Nm
• D. 81 Nm

Answer: (D)