Pine cone ID

Well, the attached 3 cones were under the same tree. I think the tree was Pinus roxburghii (Cone C) but would appreciate any correction and ID of A and B. The tree has needles in fascicles of 3; it's the tree in the center of the 4th pic.

 

A & C are both Pinus roxburghii. B is an aborted half-grown cone, not reliably identifiable.

 

Thank you so much - I've been looking at A & B so frequently. A doesn't look like anything Ive seen before, I didn't expect such a quick answer. Thanks