List all the combinations of five objects a b c d and e taken two at a time What is 5C2 List all the combinations of five objects a b c d and e taken two at a time Choose the correct answer below OA a b c d e B aa ab ac ad ae bb bc bd be cc cd ce dd de ee C ab ac ad ae ba bc bd be ca cb cd ce da db dc de ea eb ec ed O D ab ac ad ae bc bd be cd ce de What is 5C2 Cimplify your onewer