Getting Conflicted Info Re: Infested -- Simple Question

Am late to the party but started tanking (as Guardian) 10s, 11s, 12s.

Let's say: pack of 3-4 elite mobs, 1 is infested, what's the call:

(A) Pull all, focus infested, and try to stun/cc G'huuns before they infest another

(B) Sap/Hunter Trap Infested and pull the rest, and then solo kill the infested.

(C) Pull all, try to burn down the *non-*infested

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Literally had groupmates giving diametrically opposite advice (options B and C).

What about if it's 2 elites, rather than 3-4?