Yi Corporation has no preferred stock and reports the following: 2012 Earnings per share $1.80 Dividends per share $0.72 Book Value per share-end of year $8.62 If price-to-book value at the end of 2012 equals 1.00, and return on beginning of year equity is expected to remain constant, then cost of equity (to nearest percent) equals: A) 15% B) 21% C) 24% D) Not determinable