37. Herbicides (e.g., "Roundup") that inhibit biosynthesis of "essential" amino acids should be relatively safe for animal exposure because animals do not have enzymes of: (A) photosynthesis, (B) glyoxylate cycle, (C) glutamine synthesis pathway, (D) Phe, Val, Leu, Ile and His biosynthetic pathways, (E) none of above.