Detect Authority and allies

We had a debate on this during a recent gaming session:

A Shambling Horde with 3 life rushes vampire Y. Vampire Y plays Detect Authority on [ani]. What is supposed to happen?

a) The Horde burns 2 life and continue the action
b) The Horde ignores the effect since it doesn't have blood
c) The action fails since the Horde cannot burn blood


Detect Authority
Type: Reaction
Discipline: Animalism/Serpentis/Thaumaturgy
Requires an anarch.
[ani] Only usable during a action directed at a minion or location you control. The action ends (no cost is paid), unless the acting minion burns 2 blood immediately.
[ser] +1 intercept.
[tha] Reduce a bleed against you by 2.

Shamblers aren't vampires, vampires have blood, allies have life.

Action ends unsuccessfully since the Shambler can't burn blood to cancel the Detect Authority.

Thanks!

Juggernaut1981 wrote: Action ends unsuccessfully since the Shambler can't burn blood to cancel the Detect Authority.

Correct.