Let $$a\square b=ab+a+b$$ for any integers $$a$$ and $$b$$.  The solution of the equation $$3\square 5=2\square x$$ is: $x = $~\uline{~~~~~~~~~~}~ 
选项为:A:$$3$$  B:$$6$$  C:$$7$$  D:$$10$$  E:$$12$$  请回答其中一个选项.