Which of the following is correct about a positional model?
A. it evenly spreads the credit for a conversion across all the ads a consumer clicked on before finally converting.
B. it gives credit to the last ad a user saw or clicked on before converting.
C. it gives more credit to first and last touch points whether they are clicks or impressions, while the credit for the remaining touchpoints in the middle is divided equally.
D. it gives credit to the ads in the conversion path based on a statistical attribution model