11. The halophilic bacteria is/are
A. V. alginolyticus
B. V. vulnificus
C. Vibrio parahaemolyticus
D. All of these
12. Which of the following toxin resembles cholera toxin?
A. Stable toxin of E. coli
B. Diphtheria toxin
C. Labile toxin of Escherichia coli
D. Tetanus toxin