问题详情

With the fragmentation of consumer and business markets ()．
A．an increasing number of companies have disintegrated
B．manufacturers must focus on one special product to remain competitive in the market
C．it is physically impossible and prohibitively expensive to do business in the old way
D．businesses have to meet individual customers’ specific needs in order to succeed请帮忙给出正确答案和分析，谢谢！