i) Multiple alignment using Approximation alignment: Find a multiple alignment of given DNA sequences using the Approximation algorithm with a scoring scheme of "Match = 3, Mismatch = -1, Indel = -2". You select a sequence S,, where 1i3, build pairwise alignment between Si and Sj for each j=1,2,3 and i=j, and use these pairwise alignments to build the multiple alignment Ai. Use these steps to build the multiple alignment A1. S1: TGCTAG S2: AGCAG S3: TGATG Repeat the procedure for S2 to find the respective multiple alignment A2. Compare both multiple alignments (A1 and A2) and show which one is better