Which of the following regarding looking up words in a dictionary is true?

A. Print dictionaries generally contain audio attachments.
B. If a word has two definitions listed, you need only pay attention to the first one.
C. If a word has two pronunciations listed, the first one is considered the more common.
D. Print dictionaries rarely offer synonyms, whereas online dictionaries do.
I know it's not D or A, but i need help with the other two.