Answer: B. You can create a new vendor from the product/service information screen
Explanation:
The statement that is true regarding the Preferred Vendor field in Product and Services items is that can create a new vendor from the product/service information screen.
Other statements given in the question such as adding more than one preferred vendor to each product/service item and Preferred vendors must be assigned to utilize Price rules are not true.
Therefore, option B is the correct answer.