Question 3 (5 PTS): The Authors found that estrogen levels produced by cultured follicles markedly increased upon exposure to low-or high-dose testosterone, but not dihydrotestosterone (DHT), in presence of TRL. Why is that? 1) DHT cannot be aromatized into estrogen. 2) Follicles express estrogen receptor. 3) Aromatase is only found in DHT and TRL-treated follicles. 4) DHT breaks down estrogen. .