The Most Important Distinction Between True Panels and Omnibus Panels

Multiple Choice

The most important distinction between true panels and omnibus panels is

A) the sample design is different.
B) different types of information are collected.
C) time series analysis can be used only on true panel data.
D) omnibus panels can be used only for "in-house" research.
E) time series analysis can be used only on omnibus panel data.