I'm not sure about my answers

Classify the features of each market structure. Perfectly competitive firm Imperfectly competitive firm Monopolist Answer Bank no barriers to entry two to many firms producing close substitutes zero to a few barriers to entry high barriers to entry one firm producing a product with no close substitutes and supplying the whole market perfectly elastic demand The relationship between market definition and elasticity is such that the narrower a market is defined, the greater the availability of substitutes and the more elastic the demand