Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it select No substitution required.A third of us are feeling compelled to check our phones in the middle of the night.

• A. A third among us feeling compelled to check our phones
• B. A third of us feel compelled to check our phones
• C. No substitution required
• D. A third of us feel compelled checking our phones