Which of the following statements is true:

Which of the following statements is true:

Question 5 options:
a) In 2007, worldwide annual production of citric acid was over a million metric tons
b) Changzhou Changmao Biochemical Engineering Co. Ltd. specializes in manufacturing C-4 series organic acids such as p-Toluenesulfonic acid
c)
There is a positive correlation between yield and biotin concentration

d)
Lactic acid is produced in fermentation by Lactococcus spheriensis.

e)
Biomass-derived insoluble proteins include starch, hemicelluloses, and cellulose