Discrete vs Continuous

Can someone please help me with this question. I was thinking that a stock price could go on forever and you can value the exact dollar amount of real estate investment return?

Which of the following is least likely to be an example of a discrete random variable? A) The number of days of sunshine in the month of May 2006 in a particular city. B) Quoted stock prices on the NASDAQ. C) The rate of return on a real estate investment.

NASDAQ quotes prices only to 2 decimal places.