Which of the Following Best Fits the Definition for the Inefficacy

Which of the following best fits the definition for The Inefficacy Argument in favor of purchasing?

A) Because the only way to make a difference is to work together, and purchasing things is an individual activity, then it does not matter what you purchase even if it is produced unethically
B) If you are going to purchase a product produced in an unethical way, and you recognize that there is no such thing as objective truth, then whether or not you purchase that product doesn't make a difference anyway
C) When you are going to purchase a product that is produced unethically, and it is so cheap that it won't give the unethical producer much money anyway, then it is okay to purchase that product
D) If you are going to purchase a product produced in an unethical way, and you wouldn't gain anything or help those harmed by not purchasing, then it would be okay to purchase that product
E) When you want to make a positive difference, and you know that purchasing ethical albeit inefficiently produced products helps people in need, then you should purchase these ethically made products