A Researcher Obtains a Negative Value for Chi-Square Statistic

A researcher obtains a negative value for chi-square statistic.What can you conclude because the value is negative?

A) The observed frequencies are consistently larger than the expected frequencies.
B) The expected frequencies are consistently larger than the observed frequencies.
C) There are large differences between the observed and expected frequencies.
D) The researcher made a mistake.The value of chi-square cannot be negative.