Which Principle(s)is/are Correct for Mixing Insulin?(Select All That Apply

Which principle(s) is/are correct for mixing insulin?(Select all that apply.)

A) Insulin orders and calculations must be checked with another nurse.
B) Air is injected into the vial of the shorter-acting insulin first.
C) The longer-acting insulin is drawn up first.
D) The nurse must verify the compatibility of the insulin types.
E) Withdraw the shorter-acting insulin first.