What types of investments in common stock normally are accounted for using (a) The equity method and

Question:

What types of investments in normally are accounted for using
(a) The equity method and
(b) The cost method?

Common Stock
Common stock is an equity component that represents the worth of stock owned by the shareholders of the company. The common stock represents the par value of the shares outstanding at a balance sheet date. Public companies can trade their stocks on...