One of the major problems that e-commerce sites face is integrating new transactional software with the legacy systems that manage inventory for the company. Which of the following is an example of a problem that results from this lack of integration?

A.
A lack of personal contact between the seller and buyer in e-commerce transactions

B.
Frequent outages because of hacker attacks on those e-commerce systems that are less secure than their legacy counterparts

C.
Customer satisfactions issues because current inventory information may not be available

D.
Slow processing time common to online transactional systems