A hardware kit contains $40$ bolts: $25$ stainless, $10$ brass, and $5$ aluminum. Two bolts are chosen at random without replacement. What is the probability that both are stainless? Give your answer as a simplified fraction.

• A. $\frac{1}{5}$
• B. $\frac{5}{13}$
• C. $\frac{9}{13}$
• D. $\frac{1}{13}$

Answer: (B)