How can the graph of f(x) = 6 - (x - 1) be obtained from the graph of y = x O A. Shift it horizontally 1 unit to the right. Reflect it across the y-axis. Shift it 6 units down. O B. Shift it horizontally 1 unit to the left. Reflect it across the x-axis. Shift it 6 units up. O C. Shift it horizontally 1 unit to the right. Reflect it across the y-axis. Shift it 6 units up. O D. Shift it horizontally 1 unit to the right. Reflect it across the x-axis. Shift it 6 units up