Which of the Following Would Be Classified as Investing Cash

Which of the following would be classified as investing cash flows on a cash flow statement? 1. Acquiring a building by signing a long-term mortgage payable.
2) Lending cash to others.
3) Issuing stock for cash.
4) Purchasing long-term assets for cash.
5) Selling stock investments for cash.

A) 1, 4, 5.
B) 1, 2, 4.
C) 1, 3, 5.
D) 2, 4, 5.