In Which of the Following Ways Does Phishing and Smishing

In which of the following ways does phishing and smishing differ?

A) One is primarily based on social engineering, and the other is based on evading spam filters
B) One uses SMS as a delivery mechanism, and the other uses email
C) Smishing relies on hard-wired connections and mobile code updates
D) Phishing leverages poor email tagging to exploit SPIM settings