With reference to technologies for solar power production, consider the following statements 
1. 'Photovoltaic' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilises the Sun's rays to generate heat which is further used in electricity generation process. 
2. Photovoltaic generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC). 
3. India has manufacturing base for Solar Thermal technology, but not for Photovoltaic. 
Which of the statements given above is/are right?

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Photon is the fundamental unit/ quantum of

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