You Are More Likely to Repair a Leaky Drainpipe Yourself

You are more likely to repair a leaky drainpipe yourself than hire a plumber:

A) as the tax rate on your earned income dramatically decreases.
B) if the opportunity cost of your time decreases.
C) the less knowledge and experience in plumbing repair work you possess.
D) if you need to purchase the specialized tools required to complete the repair work.
E) as the transaction cost of the do-it-yourself repair increases.