Which of the following is the first compound that accepts carbon dioxide during the dark phase of photosynthesis?

Which of the following are required for the dark reaction of photosynthesis?
$A$. Light $B$. Chlorophyll $C$. $CO_2$ $D$. $ATP$ $E$. $NADPH$
Choose the correct answer from the options given below:

How many $ATP$ and $NADPH$ molecules are required for the fixation of three $CO_2$ molecules in the Calvin cycle?

During the dark reaction for the fixation of carbon,the three carbon atoms of each molecule of $3$-phosphoglyceric acid $(PGA)$ are derived from

Who discovered the $C_3$ cycle of photosynthesis?

Where is $NADPH+H^{+}$ used?