Which one of the following pairs of plant structures has

Which one of the following pairs of plant structures has haploid number of chromosomes?

1. Megaspore mother cell and antipodal cells
2. Egg cell and antipodal cells
3. Nucelus and antipodal cells
4. Egg nucleus and secondary nucleus

Egg nucleus and secondary nucleus has haploid number of chromosomes. While all other plant structures have diploid number of chromosomes.