Which of the Following, If True, Would Undermine Ryerson's Argument

Which of the following, if True, would undermine Ryerson's argument?

A) Some companies have stock that grows in value.
B) The stock market sometimes falls in overall value.
C) Savings interest rates are not as high as those of some stocks.
D) Savings interest rates can be lower than the rate of inflation.
E) Savings accounts can be opened only with a minimum balance.