confuse between atc and ipcc

wasim akram (ipcc student ) (71 Points)

14 March 2010  
Articleship for ipcc is 3 years and for atc 1 year.i will be appearing for ipcc and atc both.it means that after passing ipcc 1st group i have to complete 4 years articleship or 3 years articleship for ipcc + atc.i m totally confused please help me..