TheKnotCom Is an Internet Company That Is a One-Stop Source

TheKnot.com is an Internet company that is a one-stop source of all the items needed to have a successful wedding including listings of local caterers and photographers.When someone registers on the site,he or she is sent the "Ultimate Wedding Organizer." It offers advice on what to do about "cold feet" and how to handle in-laws.What does TheKnot.com recognize represents a portfolio of opportunities,risks,and challenges?

A) its component combination
B) its offering grouping
C) its service mix
D) its assembly process