In some cases, it’s not so much the treatment of the animals on set in the studio that has activists worried; it’s the off-set training and living conditions that are raising concerns. And there are questions about the films made outside the States, which sometimes are not monitored as closely as productions filmed in the Sates.

What can we infer from the last paragraph about animal actors?

A．They may be badly treated.	B．They should take further training.
C．They could be traded illegally.	D．They would lose popularity.