Consider the following recursive implementation to find the sum of digits of number:Which of the following lines should be inserted to complete thebelow code?

• A. (n / 10) + recursive_sum_of_digits(n % 10)
• B. (n) + recursive_sum_of_digits(n % 10)
• C. (n % 10) + recursive_sum_of_digits(n / 10)
• D. (n % 10) + recursive_sum_of_digits(n % 10)