Sec. 4. A person is presumed, subject to rebuttal, to regularly solicit business within Indiana if:
(1) the person conducts activities described in section 1(3), 1(5), and 1(6) of this chapter with twenty (20) or more customers within Indiana during the taxable year; or
(2) the sum of the person's assets, including the assets arising from loan transactions, and the absolute value of the person's deposits attributable to Indiana equal at least five million dollars ($5,000,000).