Which of the following is an equivalent expression to 7/(-5.3) to the exponent of zero when applying the zero power rule

7/1+4x9
7/5.3+4x9
7/0+4x9
7/5.3^0+36

The equivalent expression to 7/(-5.3) to the exponent of zero when applying the zero power rule is 7/1+4x9.