Vibrio Cholerae Can Be Readily Isolated and Identified in the Laboratory

Vibrio cholerae can be readily isolated and identified in the laboratory from stool samples by _______.

A) its ability to grow at high temperature and produce zones of clearing on blood agar
B) its robust chemotactic response to the presence of chitin
C) growth on selective media followed by PCR of its 16S rRNA gene
D) dark-field microscopy looking for motility