Each candidate site has an exact cost and a fixed coverage row.
Site A
Site A costs 3 and covers points one and two.
cost(A)=3
Site B
Site B costs 4 and covers points two, three, and four.
cost(B)=4
Site C
Site C costs 2 and covers points four and five.
cost(C)=2
Site D
Site D costs 6 and covers points one and five.
cost(D)=6