Study the following flow chart depicting the formation of curd from milk, identify the missing parts $X$ and $Y$.

Q. The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:

Q. Which vitamin content increases during conversion of milk into curd by lactic acid bacteria?

Q. Lactic acid bacteria convert milk into curd and improves its nutritional quality by enhancing vitamin

Q. Lactic acid bacteria (LAB) at suitable temperature converts milk to curd, which improves its nutritional quality by enhancing vitamin

Q. When there is lack of oxygen in our muscle cells, X gets converted into Y whose build-up in the cell leads to muscle cramps.​

Identify both X and Y.
A) X- glucose; Y- pyruvate
B) X- pyruvate; Y- glucose
C) X- pyruvate; Y- ethanol
D) X- glucose; Y- lactic acid