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Sun emits energy in the form of electromagnetic radiation. The following help in the generation of solar energy. Arrange them in the right sequence beginning from the starting of the cycle: [NDA]

1. Hydrogen is converted to helium at very high temperatures and pressures.

2. The energy finds its way to sun's surface.

3. A vast quantity of energy is generated by nuclear fusion.

Select the correct answer using the code given below.

A) 1-2-3                    

B) 2-3-1

C) 3-2-1                    

D) 1-3-2