The most appropriate answer would likely be:
c. Yes, because using AI for grammar and spelling checks does not alter the originality of your work.
Using AI tools for grammar and spelling correction is generally considered acceptable, as it is akin to using any other tool to enhance the clarity and professionalism of your writing, as long as the core ideas and content remain your own. However, it is always a good practice to follow any specific guidelines provided by your educational institution regarding the use of such tools.