Consider the following comparisons of LEDs and CFLs:

The CFLs contain mercury, LEDs are free of mercury
The CFLs emit more light per watt than the LEDs
The CFLs are not temperature dependent, while LED performance largely depends on the ambient temperature of the operating environment

Which among the above statements is/ are correct?

[A] Only 1 is correct
[B] Only 1 & 2 are correct
[C] Only 1 & 3 are correct
[D] all are correct