Protesters freed In Monday 's clashes , UN and Nato vehicles were set alight as hundreds of protesters gathered outside the court . Three UN policemen and two Nato K - For soldiers were injured in an explosion , thought to have been caused by a hand grenade . Several protesters have also been hurt . Earlier , some 100 UN police had arrested 53 Serbs in the operation to retake the UN court in a Serb - run part of the city .

Based on the preceding passage, choose your answer for question What happened to the vehicles ?
pick from the following.
(a). They were used to free the protester 's .
(b). They were gathered outside the court .
(c). None of the above choices .
(d). People burned them .
The answer is:
(d).