$C_4$ plants are more photosynthetically efficient than $C_3$ plants because:

Which enzyme is responsible for the reaction $PEP + HCO_3^{-} \rightarrow OAA$?

Study the pathway given below. In which of the following options are the correct words for all the three blanks $A$,$B$,and $C$ indicated?

Given below are two statements:
Statement $I$: The primary $CO_{2}$ acceptor in $C_{4}$ plants is phosphoenolpyruvate $(PEP)$ and is found in the mesophyll cells.
Statement $II$: Mesophyll cells of $C_{4}$ plants lack $RuBisCo$ enzyme.
In the light of the above statements,choose the correct answer from the options given below:

What happens to $C_{4}$ acid in the bundle sheath cells?

Which one is a $C_4$ plant?