Emeralds are more expensive than diamonds

Emeralds are more expensive than diamonds, and diamonds are less expensive than sapphire. Therefore, it necessarily follows that the emerald is more expensive than the sapphire. a. Deductive, valid. b. Inductive, weak. c. Deductive, invalid. d. Inductive, uncogent https://www.studyhelpus.com/Questions & Answers/emeralds-are-more-expensive-than-diamonds/