Also. . .

Carnival Corp., the world’s largest cruise operator, said it will not raise its $1.7-billion all-cash offer to buy NCL Holding, after rival cruise lines said they will not challenge Carnival’s unsolicited bid. NCL, which rejected the offer as too low, said it will not meet with Carnival to discuss the bid. Shares of Oslo-based NCL, owner of Norwegian Cruise Lines, climbed in European trading on speculation of a higher offer. But later its American depositary receipts rose just 50 cents to close at $16 on the NYSE.