Do the tests of causation differ for the offences of manslaughter and first degree murder in ss.231(5) and 231(6) of the Criminal Code? Describe the relevant tests of causation for these two offences and cite relevant cases where these tests were articulated.

In your discussion, refer to the most relevant passage(s) of the decision in Regina v. Cribbin that deals with this issue. Provide the exact quote(s) and the page number(s) where the quote(s) is located in the decision.