In the division expression $$28\div$$~\uline{~~~~~~~~~~}~$$=$$~\uline{~~~~~~~~~~}~$$\text{r}4$$, how many different pairs of number are there to fill the gaps? 
选项为:A:$$5$$  B:$$4$$  C:$$3$$  D:$$2$$  E:$$1$$  请回答其中一个选项.