A PAC provides investors:A$)$ protection against extension and contraction risk B$)$ no protection against prepayment risk C$)$ only protection from extension risk D$)$ only protection against contraction riskSelect the correct answer. If PSA increased from $150$ to $200,$ and the PAC had a collar of $100-300,$ how would that PSA increase impact the cash flows to the PAC? To the support class? $(1-2$ sentences max.$)$

Please support answer by solving using an excel file. Please send screenshots with formulas and calculations.