Welcome to Westonci.ca, your one-stop destination for finding answers to all your questions. Join our expert community now! Explore a wealth of knowledge from professionals across various disciplines on our comprehensive Q&A platform. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.

In the ring opening of an epoxide, a nucleophile attacks a C atom from the ______ side, resulting in ______ of configuration at that carbon.
a. back; inversion.
b. front; inversion.
c. back; retention .
d. ront; retention.