A number set contains a total of 240 numbers ranging from 20 to 80，inclusive，according to the boxplot，which of the following expression MUST be true？
Indicate all such expressions.
A number set contains a total of 240 numbers ranging from 20 to 80，inclusive，according to the boxplot，which of the following expression MUST be true？
Indicate all such expressions.
A. The number 60 must be in the set.
B.The range of the 240 numbers is less than 4 times of the interquartile range.
A number set contains a total of 240 numbers ranging from 20 to 80，inclusive，according to the boxplot，which of the following expression MUST be true？
Indicate all such expressions.
