What is the author's main purpose in the text?
(Electric Scoots on collision course with pedestrians and lawmakers)

A. to outline the threats that rideables pose and how these threats should be addressed

B. to encourage lawmakers to outlaw rideables, as too many injuries have already occurred

C. to complain about the sudden rise of rideables in San Diego and the problems they cause

D. to explore the benefits of rideables to traffic conditions, and the dangers they pose to health