Which of the following is a combustion reaction?
a) 2KCIO3 → 2KCI + 302
b) 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O
O
c) Fe + CuCl2 → FeCl2 + Cu
O
d) 4 Al + 3 O2 → 2 Al2O3