A member of the Gram Panchayat can resign by submitting a hand written application to the head. After how many days after submitting the application, the resignation will be considered effective -

• A. seven days later
• B. 15 दिनों बाद
• C. 21 दिनों बाद
• D. 28 दिनों बाद जिसमें रविवार शामिल नहीं है