Which of the following is one of the requirements that will enable mortgaged land acquired by an exempt organization for later exempt use to be excluded from debt-financed property, for purposes of the unrelated business income tax?

1.The principal purpose of acquiring the land is for investment.

2.The land is used within ten years of the acquisition date in the organizations exempt purpose.

3.The land is located in the United States.

4.Only a. and b.

5.none of the above