Who had gas masks? A. Everybody. B. A part of the protestors. C. The policemen. D. Both B and

Who had gas masks? A. Everybody. B. A part of the protestors. C. The policemen. D. Both B and

Based on common protest scenarios where tear gas or similar crowd-control agents are used, gas masks are often carried by some protestors (who come prepared) and are standard equipment for police or riot control units dealing with such situations.

The best answer here is:

D. Both B and C
(Some protestors had them, and the policemen had them.)