In a culinary school, the main chef kitchen has three light fixtures, but to have adequate light, all three fixtures must work when turned on. The reliability of the first lighting fixture is 0.88, the reliability of the second is 0.87 and the reliability of the third is 0.83. What is the overall reliability of the system?
a. 0.7535
b. None of the answers
c. 0.9973
d. 0.7656
e. 0.6354