Simplify the following expression by multiplying by the conjugate: fraction numerator 6 plus 3 square root of 5 over denominator square root of 5 minus 2 end fraction A.) 27 plus 12 square root of 5 B.) 5 plus 10 square root of 5 C.) 20 plus 7 square root of 5 D.) 7 plus 5 square root of 5