QUESTION 4 What is the wrong description about the dataset CA Schools? (Hint: use the help command in R.) O a. The dataset contains data on test performance, school characteristics and student demographic backgrounds for school districts in California. b. The data used here are from all 420 K-6 and K-8 districts in California with data available for 1998 and 1999. OC. The variable 'english' is the average English score. d. The variable 'teachers' is the number of teachers