Dandy Co$.$ has unsecured debt of

$$250,000$ that carries interest at $5\%.$

Dandy Co$.$ could possibly get a lower

interest rate by

a$.$ offering to repay it more slowly

b$.$ offering to mortgage a commercial building that had an appraised value of $$500,000$

c$.$ increasing the amount borrowed

d$.$ increasing the company's debt ratio

e$.$ doing nothing