Photosynthesis in `C_(4)` plants is relatively less limited by atmospheric `CO_(2)` levels because
A. The primary fixation of `CO_(2)` is mediated via PEP carboxylase
B. Effective pumping of `CO_(2)` into bundle sheath cells
C. Four carbon acids are the primary initial `CO_(2)` fixation products
D. Rubisco in `C_(4)` plants has higher affinity for `CO_(2)`