According to the passage, which of the following a

单项选择题

Lightning bugs can blink themselves because of a chemical substance

According to the passage, which of the following about lightning bugs is INCORRECT

A．They use blinking signals to communicate.
B．They use blinking signals to seek for food.
C．They use blinking signals to attract their own species.
D．They use blinking signals to frighten and warn enemies.

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