This is one of the most common questions received at A-Level, and it is one of the questions which best highlights the jump from GCSE to A-Level. My understanding of the requirements of the A-Level paper allowed me to answer this question and excel in the exams. The answer is simply that as long as your point is sound, original, and consistent throughout the essay, the structure you decide to use is up to you!
Unlike GCSE, which is much more formulaic (PEE, PEEL, or other paragraph structure acronym) A-Level students are given freedom to attempt to express and argue an ORIGINAL point. Once you understand this KEY REQUIREMENT, you will begin to access the higher grades with less writing and more time spent thinking. So, where GCSE may have been a simple Point-Evidence-Explain structure, the A-Level process is better suited to original point construction backed up by evidence taken from the text which is consistent throughout the whole essay. The absolute best way to practice this is to create practice questions and plan/write them under timed conditions.