Which two actions are taken by the chechout method? Choose 2 answers

Which two actions are taken by the chechout method? Choose 2 answers
A . Validates the pricing and configuration of the items
B . Moves the opportunity, quote or order to the next state of the ordering process
C . Invokes an integration procedure to fulfil the order
D . Invokes a calculation procedure tovalidate and finalize pricing

Answer: B,D