suppose you purchased a stock for $$100.$ By the end of first year the price fell to $

$50,$ by the end of the second year the price increased to $$100.$ what is your average annuakl return in the past $2$ years assuming no dividends? a$\mathrm{.}0\%$ b$\mathrm{.}50\%$ c$.25\%$ d$.-25\%$