Difference between DUAL and SINGLE

If i only get the Greddy EVO DUAL exhaust,(w/o single exhaust)

is this mean that i get TWO mufflers wihtout long pipe

OR is this mean that i get 1 muffler with the long pipe



How about Apexi?

if i only get the dual exhaust ,,

is this mean that i get TWO mufflers without long pipe

OR is this mean that i get 1 muffler with the long pipe