To Calculate the Semi-Partial Correlation of Coconut Milk Household Purchases

To calculate the semi-partial correlation of Coconut Milk household purchases CM_i and Salami Deli Meat household purchases S_i controlling for household income Y_i, (i.e., pCorr(CM_i,S_i(Y_i) ) , which of the following regressions will be run:

A) CM_i = b₀ + b₁S_i + e_i
B) CM_i = b₀ + b₁Y_i + e_i
C) S_i = b₀ + b₁CM_i + e_i
D) S_i = b₀ + b₁Y_i + e_i