A survey claims that 9 our of 10 doctors (90%) recommend brand z for their patients who have children. To test this claim again the alternative that the actual proportion of doctors who recommend brand z is less than 90%, a random sample of 100 doctors results in 83 who indicate that they recommend brand z. The test statistic in this problem is approximately (round to the nearest hundredth)

A -1.83

B 2.33

C -1.99

D -2.33