In a plain vanilla fixed$-$for$-$floating swap,

A$.$

Fixed payments and floating payments may follow different payment cycles.

B$.$

Fixed payments are made semi$-$annually while floating payments are quarterly.

C$.$

Fixed payments are known ahead of time while the floating payment due on a particular date gets to be known only on that date.

D$.$

Fixed payments and floating payments must be made on the same date.