Regarding a non-current liability, which statement is correct? a) For instalment loans, monthly interest expense increases and the loan payable decreases over time b) The bond interest expense can be calulated from the face value of the bond when the market rate does not equal to contract rate c) if the market rate is higher than the contract rate, the bond is issued at a discount d) if the effective interest rate is lower than the contract rate the bond payable is credited