State true (T) or false (F) for given statements and choose the correct option.

A. Dobson units are used to measure sound quality.

B. According to Euro III norms, sulphur should be controlled at $150$ppm in petrol.

C. The intensity of sound is the average rate per unit area at which the energy is transferred by the wave on the surface.

Match the following

Given below are two statements:

Statement $\mathrm{I}$: In a scrubber, the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.

Statement $\mathrm{II}$: Particulate matter (PM $2.5$) cannot be removed by a scrubber but can be removed by an electrostatic precipitator.

In the light of the above statements, choose the most appropriate answer from the options given below: