Triangle ABC has vertices A(−3, 1), B(−3, 4), and C(−7, 1). If ∆ABC is translated according to the rule (x, y) → (x − 4, y + 3) to form ∆A′B′C′, how is the translation described with words?
a) Translated 4 units right and 3 units up
b) Translated 4 units left and 3 units down
c) Translated 4 units left and 3 units up
d) Translated 4 units right and 3 units down