Load the US murders dataset in R.

library(dslabs)
data(murders)

Use the function str to examine the structure of the murders object. Which of the following best describes the variables represented in this data frame?

1. The 51 states.
2. The murder rates for all 50 states and DC.
3. The state name, the abbreviation of the state name, the state’s region, and the state’s population and total number of murders for 2010.
4. str shows no relevant information.

Type the number (1, 2, 3, 4) in the script below to submit your answer.