The correct option is D 9,6
In the equation
8÷2×5−11+9=6×2−5+4÷2
If Option A, we interchange 5, 9
The equation is not equal
8÷2×9−11+5=6×2−9+4÷2
30 is not equal to 5
If Option B, Interchange 8 and 5
5÷2×8−11+9=6×2−8+4÷2
18 is not equal to 6
If Option C, 9 and 6 are interchanged
8÷2×5−11+6=9×2−5+4÷2
15 is equal to 15
Answer is Option C