CTET 2 Math and Science 4 Jan 2022 Paper

Srijon participated in a marathon, although he is not a regular walker. Cramps occurred in his legs due to fast running. This happened because 'A' partially broke down to 'B', in muscles. A hot water bath improved his condition due to the complete breakdown of 'B' into 'C' and 'D'. A, B, C and D respectively are -