Which of the following describes the graph of y = |x| after it has been reflected across the x-axis, shifted vertically up 3 units, and shifted horizontally to the left 6 units?

a) y = |-x + 6| + 3
b) y = -|x + 6| + 3
c) y = -|x - 6| + 3
d) y = |x - 6| +3