The graphs shown in the figure represent energy density ${\mathrm{E}}_{\mathrm{\lambda }}\mathrm{versus} \mathrm{\lambda }$ for three A sources sun, welding arc and tungsten filament. For ${\mathrm{\lambda }}_{\max }$, correct combination will be :
 

• A

  1-tungsten, 2-welding arc, 3-sun

• B

  1-sun, 2-tungsten, 3-welding arc

• C

  1-sun, 2-welding arc, 3-tungsten

• D

  1-welding arc, 2-sun, 3-tungsten