Which of the following Python scripts calculates the mean of two variables, "Exam1" and "Exam2", from a CSV file called "ExamScores"?
import pandas as pd
scores = pd.read_csv('ExamScores.csv')
print(mean[['Exam1', 'Exam2']])
import pandas as pd
scores = pd.read_csv('ExamScores.csv')
print(scores[['Exam1', 'Exam2']].median())
import pandas as pd
scores = pd.read_csv('ExamScores.csv')
print(scores{'Exam1', 'Exam2'}.mean())
import pandas as pd
scores = pd.read_csv('ExamScores.csv')
print(scores[['Exam1', 'Exam2']].mean())