Cathy wants to contact the local cheese suppliers for a sandwich cart that she intends to start. She referred to the yellow pages, but that wasn’t helpful. She would now like to explore the trade magazines, but doesn’t know which trade magazines relate to her industry? What can Cathy do in such a case?

A.
refer to Ulrich’s Periodical Index
B.
call up 911 to seek help
C.
go around the market and explore on her own
D.
research more online