Twitter said Elon Musk’s claim that he was misled when signing a $44 billion deal to buy the social-media company is implausible and that the billionaire doesn’t have the right to back out based on his concerns over the number of spam or fake accounts on its platform.
Twitter responded to Mr. Musk’s countersuit Thursday, making details of the Tesla chief executive’s counterclaims detailing his reasons for walking away from the merger public for the first time.