You work for a company using Dynamics 365 for Sales. When customers call the company, they must provide their quote number. Customers report that quote numbers are too long. You need to shorten quote numbers to the minimum possible length. What should you do? 

Answer options:

A. Change the field type from auto number to decimal number
B. Reduce the auto number prefix to one character
C. Reduce the suffix length to four characters
D. Ensure that the prefix setting is read-only

B

Reference: https://docs.microsoft.com/en-us/dynamics365/customer-engagement/admin/change-auto-number-prefix-contract-case-article-quote-order-invoice-campaign- category-knowledge-articles