Dry and fused KHF2 on electrolysis gives 1. H2 at anode and F2 at cathode

Question

Dry and fused KHF2 on electrolysis gives

1. H2 at anode and F2 at cathode

2. H2 at cathode and F2 at anode

3. H2 at cathode and O2

4. Both H2 and F2 at cathode

Answer 1

1. H2 at cathode and O2