Investments in subsidiaries involves determining control over the investee corporation and requires which of the following accounting treatments:

a. Shares are recorded at fair value at the end of each reporting period 

b. Investment is presented by combining statements with additional disclosure details on subsidiary’s operations

c. Shares are recorded at cost when purchased and the investor company reports the share of the investee’s earnings and dividends as investment income (loss) at financial reporting dates

d. All of the above are options.