"What is it?" Wednesday: Living Tree or Not?

Below is a photo of a tree, part of which is clearly dead. Click to enlarge.

Is this:

a) An ash tree dying from the Emerald Ash Borer
b) A photo of two trees; the tall one is dead, the smaller one is alive.
c) A dead tree covered completely in poison ivy

Here's a photo of the leaves. Click to enlarge:

Let me know what you think it is!  I'll post the answer next Wednesday.