f one U$.$S$.$ dollar buys $1\mathrm{.}64$ Canadian, how many U$.$S$.$ dollars can you purchase for one Canadian dollar?

Question $3$Select one:

a$.$

$1\mathrm{.}64$

b$.$

$3\mathrm{.}28$

c$.$

$0\mathrm{.}61$

d$.$

$1\mathrm{.}00$

e$.$

$0\mathrm{.}37$