Which of These Is an Example of Ethnographic Analogy

Which of these is an example of ethnographic analogy?

A) observing the use of tools by contemporary societies to determine how they were used thousands of years ago
B) using eyewitness accounts of tool use from thousands of years ago to determine how tools were used in the past
C) comparing the ways in which two contemporary cultures use the same set of tools
D) using the tools found in the archaeological record to piece together an ancient culture's religious customs