Two dice are thrown at the same time. What is the probability that the sum of the two numbers appearing on the top of the dice is:

(i) At least 9?
(ii) 7?
(iii) Less than or equal to 6?

a) (i) 5/36, (ii) 1/6, (iii) 5/36
b) (i) 5/36, (ii) 1/6, (iii) 1/6
c) (i) 1/6, (ii) 5/36, (iii) 5/36
d) (i) 1/6, (ii) 1/6, (iii) 5/36