When testing joint hypothesis, you should: A) use t-statistics for each hypothesis and reject the null hypothesis is all of the restrictions fail. B) use the F-statistic and reject all the hypothesis if the statistic exceeds the critical value. C) use t-statistics for each hypothesis and reject the null hypothesis once the statistic exceeds the critical value for a single hypothesis. D) use the F-statistics and reject at least one of the hypothesis if the statistic exceeds the critical value. D