How to run two variables x and y in for loop simultaneously?

लूप के लिए दो वेरिएबल x और y को एक साथ कैसे चलाएं?

for (x = 0; x<m, x++), for (y = 0; y<m, y+=3) { }

for (x = 0, y = 0; x<m, y<m; x++, y+=3)

Both (A) and (B)

for (x = 0; x<m, x++) { }, for (y = 0; y<m, y+=3) { }

Explanation: