The Warburg effect is associated with the concentration of $O_2$.

Given below are two statements:
Statement $I$: In $C_3$ plants,some $O_2$ binds to $RuBisCO$,hence $CO_2$ fixation is decreased.
Statement $II$: In $C_4$ plants,mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration.
In the light of the above statements,choose the correct answer from the options given below:

When a photosynthetic plant is transferred to an atmosphere of enriched $O_2$,its rate of

In the $C_4$ cycle,more food (carbohydrates) is produced compared to the $C_3$ cycle. The reason is:

Statement $A$: Photorespiration decreases photosynthetic output.
Statement $B$: In photorespiratory pathway,neither $ATP$ nor $NADPH$ is produced.

In which type of reactions related to plant photosynthesis are peroxisomes involved?