Each of the following statements regarding testing for darkroom light leaks is correct EXCEPT one. Which one is the EXCEPTION?
a. All lights, including the safelight, should be turned off.
b. White-light leaks may be marked with tape or chalk so that they can subsequently be sealed.
c. White-light leaks are visible as soon as the lights in the darkroom are turned off.
d. Possible sources of light leaks include around the entry door and around pipes leading into the darkroom.
c. Light leaks, if present, become visible after about 5 minutes, when the eyes become accustomed to the dark.
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