The graph shows the death rates in some Chinese provinces during the Great Leap Forward. A line graph titled Death Rates in Selected Chinese Provinces, 1957 to 1961. The provinces are Anhui, Sichuan, Guangxi, Henan, Qinghai. The x axis shows Years, from 1957 to 1961, and the y axis shows deaths per 1,000 citizens, from 0 to 80. The Anhui line starts at 12 in 1957, to 12 in 1958, 17 in 1959, 70 in 1960, 8 in 1961. The Sichuan line starts at 10 in 1957, 25 in 1958, 47 in 1959, 55 in 1960, 30 in 1961. The Guangxi line starts at 12 in 1957, 12 in 1958, 18 in 1959, 30 in 1960, 10 in 1961. The Henan line starts at 14 in 1957, 13 in 1958, 20 in 1959, 68 in 1960, 8 in 1961.
On the basis of the graph, in what year did China call off the Great Leap Forward?

1958
1959
1960
1961