37. What is the relationship between photoautotrophs and heterotrophic cells? (A) Photoautotrophs use light energy for synthesis of organic molecules while heterotrophs metabolize organic substances for fuel and building blocks. (B) photoautotrophs use organic compounds as a source of carbon while heterotrophs use CO2 as a source of carbon. (C) Photoautotrophs synthesize CO2 while heterotrophs synthesize 02. (D) Heterotrophs convert solar energy into chemical energy while photoautotrophs break down organic molecules. (E) There is no relationship between the two.