Why is cube root of 7 equal to seven to the one third power question mark

a
7 to the one third power all cubed equals 7 to the one third plus 3 power equals 7 to the first power equals 7
b
7 to the one third power all cubed equals 7 to the one third divided by 3 power equals 7 to the first power equals 7
c
7 to the one third power all cubed equals 7 to the one third times 3 power equals 7 to the first power equals 7
d
7 to the one third power all cubed equals 7 to the one third minus 3 power equals 7 to the first power equals 7