Match the following columns:

Column I (Fertilisers)	Column II (N Content %)
a. CAN	1. 82
b. Anhydrous ammonia	2. 25
c. Urea	3. 33
d. Ammonium nitrate	4. 46

CAN is calcium ammonium nitrate, also known as nitro-limestone or nitrochalk, and is a widely used inorganic fertilizer. It contains about 25% of nitrogen.
Anhydrous ammonia is an efficient and widely used source of nitrogen fertilizer and its nitrogen content is 82%.
Urea is the most important nitrogenous fertilizer in the country because of its high N content and which is 46%.
Ammonium nitrate is a commonly used nitrogenous fertilizer and its nitrogen content is 33%.