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

In the case of the $C_4$ pathway:

Choose the correct statements regarding $C_4$ plants:
$(1)$ $C_4$ plants do not tolerate higher temperatures.
$(2)$ $C_4$ plants show a response to high light intensities.
$(3)$ $C_4$ plants lack a process called photorespiration.
$(4)$ Productivity of $C_4$ plants is less than $C_3$ plants.
$(5)$ $C_4$ acid $OAA$ is formed in the mesophyll cells.

Kranz anatomy is found in which of the following?

Kranz anatomy is found in

What is the primary $CO_2$ acceptor in $C_4$ plants?