Carmella Is in a Class Where the Scores on the Second

Multiple Choice

Carmella is in a class where the scores on the second midterm exam ranged from 75 to 85 points.Conrad is taking the same course,but in his section the scores ranged from 50 to 98 points.In this example,what can be said about the standard deviations in the two classes

A)  The standard deviation will be lower in Carmella's class. 
B)  The standard deviations will be negatively correlated. 
C)  The standard deviation will be less predictable in Carmella's class. 
D)  The standard deviation will be higher in Carmella's class.