Exhibit 18-2 Use This List of Half-Reactions to Answer the Following

Exhibit 18-2 Use this list of half-reactions to answer the following question(s) .
Refer to Exhibit 18-2. Which of these combinations would result in a spontaneous reaction?

A) Al³⁺(aq) and Cr³⁺(aq)
B) Al³⁺(aq) and Cu(s)
C) Cr₂O₇^2-(aq) and MnO₄^-(aq)
D) Cu(s) and MnO₄^-(aq)
E) Pt(s) and Pb²⁺(aq)