Which row is the correct one?
- Apurpose of hydrogen-oxygen fuel cell: to recycle waste; chemical product of hydrogen-oxygen fuel cell: hydrogen
- Bpurpose of hydrogen-oxygen fuel cell: to recycle waste; chemical product of hydrogen-oxygen fuel cell: water
- Cpurpose of hydrogen-oxygen fuel cell: to produce electrical energy; chemical product of hydrogen-oxygen fuel cell: hydrogen
- Dpurpose of hydrogen-oxygen fuel cell: to produce electrical energy; chemical product of hydrogen-oxygen fuel cell: water