If a Black Body Emits Radiation at a Temperature T,what

If a black body emits radiation at a temperature T,what would happen if it were heated to 2T?

A) The threshold wavelength would double.
B) The total energy emitted would double.
C) The spectrum shape would not change,but energy emitted would go up a factor of 16.
D) The peak wavelength would double.
E) The peak wavelength would be halved.