A catalyst in a catalytic converter removes nitrogen oxides from the exhaust gases produced by internal combustion engines. Which row gives the correct answer?
- Achange in oxidation number of nitrogen: decrease; type of catalyst: heterogeneous
- Bchange in oxidation number of nitrogen: decrease; type of catalyst: homogeneous
- Cchange in oxidation number of nitrogen: increase; type of catalyst: heterogeneous
- Dchange in oxidation number of nitrogen: increase; type of catalyst: homogeneous