If a borrower thinks they may not stay in their home more than a few years, what should they select in terms of a mortgage contract?

Question $8$ options:

a$)$

More discount points but a lesser contract rate

b$)$

Few if any discount points but a higher contract rate

c$)$

A lower APR but for only $10$ years

d$)$

A lower APR and buy down the points as much as possible