In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : The dark part of a shadow that receives small amount light from the source is umbra.
Reason : Umbra is formed only by an extended source of light.
A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.
what is umbra?