On January $3$ of the current year, the per$-$share stock price of a firm was $$25,$ and on January $4$ of the current year, it was $$19.$ Which of the following is a probable reason for the decrease in the stock price?

Group of answer choices

A boom in the economy

A reduction in the cost of debt

An increased rate of return

Higher future dividends

An increase in the firm's growth rate