Figure 8-2b -Figure 8-2b Above Shows That Primary Data May Be Divided

Figure 8-2b
-Figure 8-2b above shows that primary data may be divided into three related parts.If "C" represents data collected from mechanical,personal,or neuromarketing methods,which type of data is "C?"

A) questionnaire data
B) mined data
C) internal secondary data
D) external secondary data
E) observational data