گزینه‌ای را انتخاب کنید که جمله را به بهترین شکل کامل می‌کند

Choose the option that best completes the sentence.

The minister insisted that the contract had been awarded on merit, but the fact that the winning company belonged to his brother raised suspicions of ______.

A) self-dealing

B) stonewalling

C) grandstanding

D) backtracking