Stock A has a volatility of $45\%45\%$ and a correlation of $19\%19\%$ with your current portfolio. Stock B has a volatility of $99\%99\%$ and a correlation of $31\%31\%$ with your current portfolio. You currently hold both stocks. Which of the following choices below will increase the volatility of your$$ portfolio: $($i$)$ selling a small amount of stock B and investing the proceeds in stock$$ A$,$ or$($ii$)$ selling a small amount of stock A and investing the proceeds in stock$$ B$?$

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Part $1$

The marginal contribution to risk for stock A is enter your response here$\%.($Round to two decimal$$ place.$)$