Using the Studentised Residuals T_i to Determine Influential Points in a Multiple

Multiple Choice

Using the Studentised residuals t_i to determine influential points in a multiple regression model with k independent variable and n observations and letting t_n-k-2 denote the upper critical value of a two-tail t test with a 0.10 level of significance,X_i is an influential point if

A) |t_i | > t_n-k-2.
B) |t_i | < t_n-k-1.
C) |t_i | > t_n-k-1.
D) |t_i | < t_n-k-2.