Application of which of the following hormones to unpollinated pistils make them develop into seedless fruits or parthenocarpy which carry a better market price than the normal fruits having seeds?
Abscisic acid
Gibberellin
Auxin
Cytokinin
Application of auxins to unpollinated pistils make them develop into seedless fruits or parthenocarpy which carry a better market price than the normal fruits having seeds, e.g., tomato