Which of the following statements regarding the control of C. botulinum in canned sauerkraut is not correct?
a. salt in the sauerkraut inhibits the growth of C.botulinum bacteria
b. an acidic pH (less than 4.7) in the sauerkraut prevents the botulinum spores from germinating and the bacteria from growing.
c. cans of sauerkraut are usually irradiated to destroy any spores or bacteria present in the can
d. all of the above statements regarding sauerkraut are correct.