During a project phase, your customer raises some questions concerning parameters of the
procurement type in the material master in the SAP ECC system. Which of the following procurement type properties are valid? (Choose two) 

If procurement type E (in-house production) is set, external procurement may still be possible depending on the material type.

A material's procurement type can be freely selected between E (in-house production), F (external procurement) and X (both procurement types) independent of material type. 

Procurement types E (in-house production) and F (external procurement) have to be further refined with special procurement types. 

If both procurement types are allowed with entry X (both procurement types), requirements planning assumes in-house production.