Which of the Following Is One of the Conditions Necessary

Which of the following is one of the conditions necessary for an amalgamation to result in a tax-free combination?

A) At least one of the corporations must be Canadian.
B) 50 percent of the assets and liabilities of the old corporation must become assets and liabilities of the new corporation.
C) The two corporations must be in a similar line of business.
D) All of the shareholders of the old corporations must become shareholders of the new corporation.