Last Week Sarah Had Exams in Math,Spanish and English

Multiple Choice

Last week Sarah had exams in Math,Spanish and English.On the Math exam,the mean was µ = 40 with σ = 5 and Sarah had a score of X = 45.On the Spanish exam,the mean was µ = 60 with s = 8 and Sarah had a score of X = 68.On the English exam,the mean was µ = 70 with s = 8 and Sarah had a score of X = 78.For which class should Sara expect the better grade?​

A) ​Math
B) ​Spanish
C) ​English
D) ​Grades are the same.