Did Original Sin derive solely from Adam or from both Adam and Eve?

Pohle, *God the Author of Nature and the Supernatural* pt. 2, ch. 2, §3, art. 4, 1. claims: >It is a controverted question among theologians whether \[1\] original sin derives solely from Adam or \[2\] from both Adam and Eve as its efficient cause Which theologians held position #1, and which held position #2? Position #1 would seem to imply that Eve never had Original Sin, though she certainly committed an actual sin (of pride) by transgressing God's command. Position #2 would have to explain how Eve inherited or shared in Adam's sin. I'm not asking whether Adam or Eve is more culpable , but whether Adam alone or Adam with Eve is the cause of their children inheriting Original Sin.