For the following numbers: $$-\frac{1}{3}$$, $$0.12$$, $$-2$$, $$2$$, $$\frac{3}{4}$$, $$-1\frac{1}{2}$$, how many positive rational numbers are there? 
选项为:A:$$0$$  B:$$1$$  C:$$2$$  D:$$3$$  请回答其中一个选项.