When Monitoring the Value of Your Stock Investments, It Is

When monitoring the value of your stock investments, it is important to

A) Wait until you sell them to determine their value.
B) Track the prices in the December copy of a financial magazine.
C) Estimate their values based on similar stocks.
D) Determine their values using the price quotations reported on the Internet and in newspapers.
E) Assume that the values remain the same as long as you hold them.