Which Principles Are Correct for Mixing Insulin? (Select All That

Which principles 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.