If the standard deviation of the distribution of the difference between means is 0.86, what is the t score?
A. Fraction numerator 19 minus 11 over denominator 0.86 end fraction space equals space 9.30.
B. Fraction numerator 19 minus 11 over denominator square root of 0.86 end root end fraction space equals space 8.63.
C. Fraction numerator 27 minus 22 over denominator 0.86 end fraction space equals space 5.81.
D. Fraction numerator 27 minus 22 over denominator square root of 0.86 end root end fraction space equals space 5.39.