Find the Critical Value for the Following Values of the Significance

Multiple Choice

Find the critical value for the following values of the significance level $\alpha$ , sample size $n$ , and alternate hypothesis $H _ { 1 }$ .
$$\alpha = 0.05 , n = 7 , H _ { 1 } : \mu < \mu _ { 0 }$$

A) -1.943
B) -1.645
C) -2.447
D) -1.895