Use the Following Dataset to Answer the Following Question - What Is the Unit of Observation?
A) Person-Salary
B)

Use the following dataset to answer the following question. $$\begin{array} { | l | c | c | c | c | } \hline { \text { State } } & \text { Year } & \text { Salary } & \text { Lacation } & \text { Sales Warkshap? } \\\hline \text { Aiden Roser1 } & 2017 & \$ 98,000 & \text { Seattle } & \text { Y } \\\hline \text { Sadie Hubbard } & 2017 & \$ 83,000 & \text { Chicago } & \mathrm { N } \\\hline \text { Jen Jordar1 } & 2018 & \$ 77,000 & \text { Seattle } & \mathrm { N } \\\hline \text { Rob Jacksor1 } & 2018 & \$ 79,000 & \text { Chicago } & \mathrm { N } \\\hline\end{array}$$
- What is the unit of observation?

A) Person-salary
B) Person-year
C) Person-year-location
D) Salary