A pharmaceutical company has tested five drugs on three different organisms. The following incomplete table reports if a drug works on the given organism. For example, drug A works on organism R while B and C work on Q.

Following additional information is available:
• Each drug works on at least one organism but not more than two organisms.
• Each organism can be treated with at least two and at most three of these five drugs.
• On whichever organism A works, B also works. Similarly, on whichever organism C works, D also works.
• D and E do not work on the same organism.