Which of the following is NOT correct for Type I photosensitization? a. Photosensitizers can be recycled. b. It's an electron transfer process. c. It's favored by the low O2 concentration. d. Superoxide and hydroxyl radicals are produced. Low light level therapy has been shown in some cases to be beneficial for: a. Following a heart attack b. COVID 19 c. Back pain d. Cancer e. None of the above.