$29.5\; mg$ of an organic compound containing nitrogen was digested according to Kjeldahl’s method and the evolved ammonia was absorbed in $20\; mL$ of $0.1\; M\; HCl$ solution. The excess of the acid required $15\; mL$ of $0.1\; M \;NaOH$ solution for complete neutralization. The percentage of nitrogen in the compound is

Question

( A ) 47.4
( B ) 59
( C ) 29.5
( D ) 23.7