Answer:
The correct answer is - They must be in the same phylum but may be a different species.
Step-by-step explanation:
Genus is a taxanomic category in a biological classification that is more inclusive than phylum and class and ranks above the species. It includes the group of organism that are under in same family, class, or phylum in more general but these organism may belong to different species.
Thus, the correct answer is - They must be in the same phylum but may be a different species.