A Fertilizer Marked "20-10-5" Is

A fertilizer marked "20-10-5" is

A) 20% N (as ammonium nitrate) ,10% P (as phosphate) ,and 5% K (as the mineral potash) .
B) 20% P (as phosphate) ,10% N (as ammonium nitrate) and 5% K (as the mineral potash) .
C) 20% K (as the mineral potash) ,10% P (as phosphate) ,and 5% N (as ammonium nitrate) .
D) 20% N (as ammonium nitrate) ,10% K (as the mineral potash) ,and 5% P (as phosphate) .