6. Because the first detectable product of the Calvin cycle is _____, the cycle is also known as the _____ pathway. (A) Oxaloacetate; C4 (B) Ribulose 1,5-bisphosphate; C5 (C) 3-phosphoglycerate; C3 (D) Glyceraldehyde 3-phosphate; C3 (E) Rubisco; C4