Based on the long-term performance of the best and worst performers in the S&P 500, what can be inferred about the potential returns of equity investments? 

a) The maximum gains and losses are 100% or gains of thousands of percent 

b) The can result in losses of up to 100% or gains of thousands of percent 

c) The gains are capped at a single-digit annual return, but you can lose up to 100% of your investment