a dna segment has base order AGC TTA TCG , which copy exhibits a frameshift mutation through deletion?

If there is a deletion in the DNA segment AGC TTA TCG, it would result in a frameshift mutation. The deletion of a single base in this segment could cause a shift in the reading frame, changing the grouping of codons and potentially leading to a non-functional protein being produced. A possible altered sequence after the deletion could be AGT TAT CG.