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I want to submit Topic B ,Topic C and Topic D in their respective categories.
chakot - Not sure what you mean by "submit."
If you're talking about creating additional pages about Topic B ,Topic C and Topic D on the same site, that's fine, but I would rewrite the content and make it different and probably more in depth than on the topic A page. Do not substantially quote it.
I would create unique titles on the Topic B ,C and D pages, but make sure they include keywords relevant to each page.
If, by "submit," you're talking about directory submissions of your topic B, C, and D pages to get additional directory listings for your site, that very much depends on the directory and its policies... and I'd raise that question in the Directories Forum on WebmasterWorld, not here.
Most well-edited directories require that "deep content," as it's called, be substantially different from what's elsewhere in the site. That said, most directories are not well-edited.
If you're talking about submitting to search engines, it's not necessary to submit to the main search engines... just get good inbound links to your pages and they'll find you. With the setup you're describing, it will be better to get your inbound links from different sites, as opposed to getting many links from the same site.