When asked to set up an experiment to show that 'light is necessary for photosynthesis', a student ran to the school garden and set up the experiment by using a plant growing in the school garden. The experiment failed. His classmates made the following suggestions to get success in the experiment:
Student A: Safranin should be used instead of iodine
Student B: The leaf should not be boiled in alcohol to remove chlorophyll before testing for starch
Student C: Transparent paper should be used instead of black paper strip
Student D: The leaf should be destarched before before starting the experiment
The correct suggestion is given by:

Options

A. student A
B. student B
C. student C
D. student D

Answer

D