Which of the following combinations will result in a sharply$-$increasing yield curve?O a$.$ Constant future expected interest rates and increasing liquidity premiums Ob$.$ Increasing future expected interest rates and decreasing liquidity premiums O c$.$ Increasing future expecied interest rates and increasing liquidity premiumsd. Increasing future expected interest rates and constant liquidity premiums e$.$ Decreasing future expected interest rates and increasing liquidity premiums