Identify the correct steps used to prove the formula ∑nj= 1(aj− aj−1)= an− a0 , where a0, a1, . . . , an is a sequence of real numbers. (Check all that apply.) Check All That Apply The explicit form of the summation is: ∑nj= 1(aj− aj− 1) = a1− a0+ a2− a1+ a3− a2+ ...+ an− an− 1 The explicit form of the summation is: ∑j = 1 n ( aj − aj − 1 ) = a1 − a0 + a2 − a1 + a3 − a2 + ... + an − an − 1 The explicit form of the summation is: ∑nj= 1(aj− aj− 1) = a1− a0+ a2− a1+ a3− a2+ ... + an− an− 2 The explicit form of the summation is: ∑j = 1 n ( aj − aj − 1 ) = a1 − a0 + a2 − a1 + a3 − a2 + ... + an − an − 2 The reduced Explicit form = -a0 + (a1 - a1) + (a2 - a2) + + (an - 1 - an - 1) + an = an - a0 The reduced Explicit form = -a0 + (a1 - a1) + (a2 - a2) + + (an - 1 - an - 1) + an = an - a0 The reduced Explicit form = -a0 + (a1 - a2) + (a2 - a1) + + (an - 1 - an - 2) + an = an - a0