A topic is what the paper is about, a theme is sort of how a story is set. For example, maybe my topic is danger, so I use that through the theme of snow
I would go ahead with D but I am sorry if I am wrong. Please let me know if I am wrong
The correct option is A. Cover letter should expand on the information is a résumé, not simply restate it.
A cover letter is a single-page letter written to the person or organisation offering the job you're applying for. A well-written cover letter should introduce you and encourage the person reading it to read your resume. A cover letter should be personalized and demonstrate that the applicant has done his or her research on the company.