Given below are four sentences, three of which, are jumbled. Pick the option that gives the correct order.
A. Bioprospecting, or going into the rainforest to look for plants that can be used in foods, cosmetics, and medicines has become a big business.
B. The local people help agencies to extract fluids from plants.
C. The rainforest is thus an important resource for scientists.
D. These are used to make medicines by large companies