Which of the Following Statements About the Schema Centralization Pattern

Which of the following statements about the Schema Centralization pattern does not make sense?

A) Up-front analysis effort is required to establish a schema layer independent of and in support of the service layer.
B) Schemas can be designed and implemented independently from the service capabilities that utilize them.
C) Multiple technical service contracts can make reference to a single schema.
D) Services in the same service inventory cannot share the same schemas.