In Mixing Regular and NPH Insulin,the Nurse Completes the Following

In mixing regular and NPH insulin,the nurse completes the following actions.Place these actions in the correct order.(Separate letters by a comma and space as follows: a,b,c,d.)
A) Inspect bottles for expiration dates.
B) Gently roll bottle of NPH in hands.
C) Wash your hands.
D) Inject air into the regular insulin.
E) Withdraw the NPH insulin.
F) Withdraw the regular insulin.
G) Inject air into the NPH bottle.
H) Clean rubber stoppers with an alcohol swab.