Which of the Following Is False

Which of the following is false?

A) In general,the deregulation of the airlines and interstate trucking industries led to higher costs and higher prices.
B) Since the early 1980s the size of companies acquired in mergers has been getting larger.
C) The rule of reason is partially in force today as firms are subject to prosecution if they control 60% of the relevant market and have behaved badly toward their competitors.
D) When two firms in the same industry form one larger company it is called a horizontal merger.