If you were conducting a two sample Ttest to compare two means, which of the following would allow you to properly use the pooled method in order to perform the test?

A)

If the larger sample standard deviation was 5 and the smaller sample standard deviation was 4

B)

If the larger sample mean was 5 and the smaller sample mean was 4

C)

If the larger standard error was 5 and the smaller standard error was 4