If $$(a+b) : (b+ c) : (c+a) = 7: 4 : 5$$ , and $$a +b +c = 16$$, then $$(a^{2}+b^{2}+c^{2}) : (ab + bc + ca) is equal to:

A

24:17

B

26:19

C

27:20

D

23:15