When LAB ( Lactic acid bacteria )converts milk into curd which of these vitamins is found to be increased in amount?

Vitamin B12

The correct answer is Option (3) –Vitamin B12

Micro-organisms such as Lactobacillus commonly called lactic acid bacteria (LAB) grow in milk and convert it to curd. During growth, the LAB produce acids that coagulate and partially digest the milk proteins. A small amount of curd added to the fresh milk as inoculum or starter contain millions of LAB, which at suitable temperatures multiply, thus converting milk to curd, which also improves its nutritional quality by increasing vitamin B12. In our stomach too, the LAB play very beneficial role in checking disease- causing microbes.