Aaron finished watching a concert at $$2.45$$ p.m. The concert lasted $$\text{1h}$$$$\text{20min}$$.  What time did the concert start? 
选项为:A:$$1.25$$ p.m.  B:$$1.45$$ p.m.  C:$$3.05$$ p.m.  D:$$3.35$$ p.m.  请回答其中一个选项.