On 1 January, Helen's portfolio is valued at $1,000,000. Helen wants to make an $100,000 payment to buy a house on 31 December of the same year, but does not want the year-end portfolio value to fall below $1,000,000. The expected annual return on the investor's existing portfolio is 15 percent with an expected standards deviation of 20 percent. The risk-free rate is 8%. The safety-first ratio for the portfolio is closest to:

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