What was the serious problem after the cane toads arrival in Australia？A．The cane toads di

What was the serious problem after the cane toads arrival in Australia？

A．The cane toads did not eat the cane beetles.

B．The number of the cane toads had swollen.

C．There was another outbreak of the cane beetles.

D．The cane toads killed all the cane beetles.

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