Assertion: For higher temperatures, the peak emission wavelength of a black body shifts to lower wavelengths.

• A. Reason: Peak emission wavelength of black body is proportional to the fourth power of temperatures.
• B. Both assertion and reason are true and the reason is the correct explanation of the assertion
• C. Both assertion and reason are true but the reason is not a correct explanation of the assertion
• D. Assertion is true but the reason is false
• E. Both assertion and reason are false