If 3 < a < 4 and 1 < b < 3, what are all possible values of b/3a?
a) (1/4) < (b/3a) < (3/4)
b) (1/12) < (b/3a) < (1/3)
c) (1/9) < (b/3a) < (1/4)
d) (1/8) < (b/3a) < (1/2)