Let A = (-4, -2], B = {x in Z | -5 <= 2x + 1 < 3}, and C = {-5, -π, -2, 1}. Determine the following:

(a) What is A \ B?
1. (-4, -2]
2. (-[infinity], -4] U (-2, [infinity])
3. (-[infinity], -4) U (-2, [infinity])
4. (-[infinity], -4) U (-2, -2]

(b) What is C ∩ A?
1. {-5, -2}
2. {-5, -2, -π, 1}
3. {-5, -π, -2}
4. {-5, -π, -2, 1}