A company runs one round of twenty win and loss interviews as a project, then stops. What is the limitation of this approach?

• AOne round produces anecdotes. A steady cadence feeding the same record is what makes patterns visible and shows whether anything is changing, which is what the activity is for.
• BTwenty interviews is too small a sample to be meaningful at all.
• CThe interviews should have been run by an external agency.
• DNothing, since twenty interviews cover the market adequately.