What are the boundaries of the class 34.5 - 58.5 ?

Question

.

a. 34 - 59

b. 34.45 - 58.55

c. 34.445 - 58.555

d. 34.4 - 58-6

e. none of these

Answer 1

Based on the links below, I would say "a" is the correct answer.
http://mathworld.wolfram.com/ClassBoundaries.html
http://homepage.smc.edu/miao_wendy/Math52/Chap2_Frequency_Table.pdf