Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
A. It consist of a very strong vessel made of aluminium alloy, with a lid that fits tightly on the top.
B. The lid can be sealed on to the vessel by means of a rubber ring.
C. At the centre of the lid there is a vent, or hole through which steam can escape.
D. A pressure cooker is a vessel in which food is cooked in steam under pressure.