Nick Fury Leadership Timing

[When is Dr. Doom]

Hi, I'm not sure when the power cost in the second half of Nick Fury's Last Line of Defense is resolved?
a) 1 Power is spent immediately when damage is suffered during step 12 of the attack, and then the advance is resolved in 14b
b) You both pay the power and resolve the advance in 14b

[Negoldar]

13 minutes ago, When is Dr. Doom said:

a) 1 Power is spent immediately when damage is suffered during step 12 of the attack, and then the advance is resolved in 14b

This is the correct resolution.