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) Inside the guts of a microwave, a device called a magnetron channels electrical energy from a power outlet to a heated filament, creating a flow of electrons that in turn transmits microwaves into the cooking chamber through an antenna. 

B) Microwaves bounce around in the chamber and cook food through radiation heating—exciting molecules within an object—by becoming lodged in water, sugars, and fats. 

C) Microwave ovens were life-altering from the moment they began humming and heating in homes of the 1970s.   

D) Microwave ovens cook foods by injecting them with, surprise, microwaves—a form of energy.