The correct options are
A 0+0=0
B 0-0=0
C 0×0=0
0+0=0 , Add a number to zero we get the number itself
0-0=0 , Subract zero from a number we get the number itself.
0×0=0 , Multiply any number by zero , the result is zero
0÷0= not defined , if zero is the divisor then the number is not defined