Assertion. The thallus of Riccia is internally differentiated into an upper photosynthetic region and lower storage region.
Reason. The lower storage region is formed from parenchymatous cells.
A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both Assertion and Reason are false.