[EM] correction to correction

[Warren Smith]

typo:
let us consider utility(A)=10, utility(C)=9, utility(C)=0
for the first group of voters, and utility(A)=0, utility(C)=9, utility(C)=10
for the second group.

should have said:
et us consider utility(A)=10, utility(C)=9, utility(B)=0
for the first group of voters, and utility(A)=0, utility(C)=9, utility(B)=10
for the second group.