A spinner has six equal-sized sections numbered 1, 1, 2, 2, 3, and 4. What is the sample space for the spinner, and what is the probability of spinning a 1?
a. {1, 2, 3, 4}; P(1) = 0.25
b. {4, 3, 2, 1}; P(1) = 0.33
c. {1, 2, 2, 3, 4}; P(1) = 0.20
d. {1, 1, 2, 2, 3, 4}; P(1) = 0.33