<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Expression of an mRNA encoding for a soluble form of the Fas protein prevents a cell from undergoing programmed cell death. However, after inclusion of a certain exon, this same Fas pre-mRNA eventually leads to the translation of a protein that is membrane bound, subsequently promoting the cell to undergo apoptosis. Which of the following best explains this finding?? A: Base excision repair, B: Histone deacetylation, C: DNA missense mutation, D: Post-translational modifications, E: Alternative splicing,  <response>: This question is asking about a mechanism that regulates whether a cell undergoes apoptosis programmed cell death. It describes an mRNA that encodes a soluble form of the Fas protein, which prevents apoptosis. However, after inclusion of a certain exon, the same mRNA encodes a membrane-bound form of Fas that promotes apoptosis. The key is to understand what cellular process could lead to the same mRNA producing two different protein isoforms. Alternative splicing allows different exons to be included or excluded from the final mRNA, leading to different protein products from the same gene. The other answer choices describe different cellular mechanisms not relevant to this specific scenario.E: Alternative splicing 