In solo Adventure #6, what does ASTRA do on the first draw if blue and green are already active?

Question

Accepted Answer

It activates blue or green if no one has yet; if both are active, the card crosses off a Propagation symbol instead and propagates. If nothing remains to cross off, the card does nothing. Any propagation, whatever the cause, spreads all active viruses.

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In solo Adventure #6, what does ASTRA do on the first draw if blue and green are already active?