Which limitations apply in SAP S/4HANA?

Your customer has an SAP ERP system with classic G/L accounting and wants to convert to SAP S/4HANA as soon as possible during the current fiscal year .

Which limitations apply in SAP S/4HANA? There are 3 correct answer to this question.
A . You cannot continue to use the consolidation staging ledger
B . You must define valuation areas for foreign currency valuation
C . You must use the accounts approach to parallel valuation
D . You cannot configure and activate document splitting
E . You must configure profit center and segment accounting

Answer: A,D,E