Write the next sentence in this paragraph:

How to be a wine sales rep
Read about wine.
In order to be a successful wine sales rep, you need to learn all you can about wine. Read up on the different sources and fermentation processes associated with various types of wine, and learn about the vintages and pairings that people tend to prefer.

pick from the following.
a). Pay special attention to local wines, if this exists in your area. Subscribe to periodicals like " wine spectator " and " decanter " to keep up with current trends in wine..
b). There are several different wine market understanding systems to use. Start by answering a question as a tenant and some other questions about wine knowledge..
c). Learn more about what there are different types of wine: there is no scientific evidence to support the thesis, though wine books can help. Learn about other varieties and vintages in your area..
d). You can find hundreds of books about wine, especially those that involve fermentation processes. You can also read plenty of literature about wines on vine-bound wine websites (such as google scholar)..
a).