If one British pound can purchase $$2\mathrm{.}00$ U$.$S$.$ dollars, how many Brnisn

a$.0\mathrm{.}5600$

b$.0\mathrm{.}5550$

c$.0\mathrm{.}4850$

d$.0\mathrm{.}4000$

e$.0\mathrm{.}5000$