All the below are true or false:

a) The principal part of a fixed mortgage loan payment can be found by multiplying the periodic interest rate by the ending balance for a given period.

b) For fixed-rate fully amortized mortgage loans, more of the fixed payment goes towards principal as we approach the end of the loan term.

c) We can find the amount needed to pay off a fixed-rate fully amortized mortgage loan at any point in time by solving for the PV of the remaining payments.

d) PMT" in the PVA formula tells us the periodic mortgage payments for a fixed-rate fully amortized loan.