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There are bilbies and ghost bats kept in the same nocturnal enclosure at a wildlife park.

Bilbies are small marsupials that hop around on their hind legs. Ghost bats are carnivorous bats that are active during the evenings.

Eddy: “If the animal in the enclosure is active during the evening, it must be a ghost bat.”

Vahan: “No Eddy, a bilby could also be active during the evening.”

If the information in the box is true, whose reasoning is correct?