Which of the Following Statements Is True

Which of the following statements is true?

A) A merger between a birdseed producer and a manufacturer of storm windows is a vertical merger.
B) A relatively small number of mergers and acquisitions has occurred each year from the mid-1980s through the early 2000s.
C) The "deep pocket" effect occurs with a conglomerate merger when the acquired firm receives large financial resources from the acquiring firm to use against the acquired firm's rivals.
D) All of the above.