You have an Exchange Server 2013 organization.
You plan to use document fingerprinting.
You need to identify which file type cannot be used as a template for document fingerprinting.
Which document type should you identify?

A.
.pptx

D.
.doc
.dotx

C.
.txt

D.
.doc
.dotx

Explanation:
Document Fingerprinting supports the same file types that are supported in transport rules. One
quick note about file types: neither transport rules nor Document Fingerprinting supports the .dotx
file type, which can be confusing because that’s a template file in Word. When you see the word
“template” in this and other Document Fingerprinting topics, it refers to a document that you have
established as a standard form, not the template file type.

Document Fingerprinting
https://technet.microsoft.com/en-us/library/dn635176(v=exchg.150).aspx