Suppose you are a euro$-$based Italian investor, and you are investing $10,000$ to buy shares of a British company at $50$ per share. The exchange rate is $1\mathrm{.}257$ per pound. The stock pays a $1$ dividend one year later, and you sell your shares for $55.$ The exchange rate has changed to $1\mathrm{.}3$ per pound at the time of your sale $($round your answers to two decimals$).$

a$.$ Your pound rate of return on this investment is $\%.$

b$.$ The change in pound$-$euro exchange rate is $\%.$

c$.$ Your euro rate of return is $\%.$

d$.$ If you had agreed at the outset to sell $7955$ forward at the rate of $\frac{1\mathrm{.}32}{},$ your euro rate of return on this investment is $\%.$