The fruit juices turn bitter in taste if they are kept in open place for some time, because of [CPMT 1977]

Bacteria of the atmosphere react with the juice

Fermentation of the juice by yeast

All the above three statements are correct

The fruit juices turn bitter in taste if they are kept in open place f

1.	The fruit juices turn bitter in taste if they are kept in open place for some time, because of [CPMT 1977]
A.	Bacteria of the atmosphere react with the juice
B.	Fermentation of the juice by yeast
C.	Some internal factors
D.	All the above three statements are correct
Answer» C. Some internal factors