In Using the T-Test to Compare the Means of Two $\mu_{1 \neq \mu_{2}}$

Multiple Choice

In using the t-test to compare the means of two groups,the alternative hypothesis is typically stated as:

A) $\mu_{1 \neq \mu_{2}}$
B) $\mu_{1}=\mu_{2}$
C) $\mu_{1}-\mu_{2}=2$
D) $\mu_{1}+\mu_{2}=1$