Net income was \(\$ 240,000\) in \(19 \mathrm{X} 4, \$ 210,000\) in 19X5, and \(\$ 252,000\) in \(19 \mathrm{X} 6\). The change from \(19 \times 5\) to \(19 \mathrm{X} 6\) is a (an) (p. 788)

a. Increase of 5 percent

c. Decrease of 10 percent

b. Increase of 20 percent

d. Decrease of 12.5 percent