Which of the Following Refers to Panel Data

Multiple Choice

Which of the following refers to panel data?

A) Data on the unemployment rate in a country over a 5-year period
B) Data on the birth rate, death rate and population growth rate in developing countries over a 10-year period.
C) Data on the income of 5 members of a family on a particular year.
D) Data on the price of a company's share during a year.