Refer to the given dichotomous key and select the incorrect option regarding it.
A P could be Xanthomonas that causes citrus canker
in plants whereas Q could be Clostridium that causes
tetanus in humans.
B R could be Chlorella whereas S could be Streptomyces.
C S could be Penicillium whereas T could be Leishmania.
D Q could be Mycobacterium that causes tuberculosis
in humans whereas S could be Aspergillus.