We can formdifferent two-digit numbers with the numbers $$1$$, $$3$$ and $$0$$.（without using the same number two times like $$33$$ ） 
Overseas Competition->Knowledge Point->Counting Modules->Questions Involving Enumeration->Dictionary Ordering
$$13$$、$$10$$、$$31$$、$$30$$， notice that $$0$$ cannot be in the first place, so only $$4$$ numbers can be formed．  So the answer is $$\text{B}$$． 