The set E = {..., -4, -2, 0, 2, 4, ...} of even integers can be described by means of a defining condition by E = \{y = 2x : x \in \mathbb{Z}\} = \{2x : x \in \mathbb{Z}\}. Describe the following sets in a similar manner.
(a) A = {..., -4, -1, 2, 5, 8, ...}
(b) B = {..., -10, -5, 0, 5, 10, ...}
(c) C = {1, 8, 27, 64, 125, ...}