A Bank Has $100 Million in Assets in the 0

A bank has $100 million in assets in the 0 percent risk-weight category,$200 million in assets in the 20 percent risk-weight category,$500 million in assets in the 50 percent risk-weight category,and $750 million in assets in the 100 percent risk-weight category.This bank has $57 million in core (Tier 1) capital.What is this bank's ratio of Tier 1 capital to risk-weighted assets?

A) 3.68 percent
B) 7.60 percent
C) 18.25 percent
D) 5.48 percent
E) None of the options is correct.