Given below are four jumbled sentences. Select the option that gives their correct order.

A. The boy, who was passionate about nature, knew that he had to walk away slowly not to alarm the animal.

B. Twelve-year-old Alessandro was wandering among the bushes looking for pine cones, when he appeared to be followed by a bear.

C. Alessandro’s mother panicked when she saw the bear; however, the boy told her to be silent.

D. When he had safely entered his house, the bear stopped following him and disappeared.