A Marketing Manager Has Discovered That Relevant,internal Secondary Data Don't

A marketing manager has discovered that relevant,internal secondary data don't exist to support a decision process.The next step the manager should take is to

A) look for external sources for the relevant data.
B) see if good data can be obtained from published sources.
C) begin a primary data collection effort.
D) All of these are correct next steps.
E) look for external sources and see if good data can be obtained from published sources.