If a shirts can be purchased for c rupees, how many shirts can be purchased for t rupees?	Choose the correct answer:
A) at/c
B) a/c
C) ac/t
D) t/(ac)
E) c/(at)
at/cns = at/c
<result>A</result>
If a shirts can be purchased for c rupees, how many shirts can be purchased for t rupees?