Select the sentence in which articles have been used appropriately:-

A. There is a policeman at the door.
B. Some children suffer from a fear of the dark.
C. He has the good knowledge of English.
D. Tea we got on the bus, was cold.
E. He sent for a umbrella.

Choose the most appropriate answer from the options given below:

A and B only

The correct answer is Option (3) - A and B only