Vantage Corporation Invested $800 Cash in Tandem Company Stock

Vantage Corporation invested $800 cash in Tandem Company stock.
As a result of this transaction,

A) Vantage Corporation would have a cash outflow from financing activities.
B) Tandem Company would have a cash inflow from investing activities.
C) The balance in the Cash account on Vantage's books would decrease, while the balance in the Cash account on Tandem Company's books would increase.
D) All of these statements are true.