You are implementing a data classification solution. The research department at your company requires that documents containing programming code be labeled as Confidential. The department provides samples of the code from its document library. The solution must minimize administrative effort. What should you do? 

Answer options:

A. Create a custom classifier.
B. Create a sensitive info type that uses Exact Data Match (EDM).
C. Use the source code classifier.
D. Create a sensitive info type that uses a regular expression.

C

Reference: https://docs.microsoft.com/en-us/microsoft-365/compliance/classifier-learn-about?view=o365-worldwide