Context: Five weeks ago , when he was born , he weighed 8 pounds 9 ounces and after that dipped down to 7 pounds 9 ounces . He has certainly been doing a lot of growing and all that eating has paid off for him . He also gained 2 inches and is now 23 inches long .
Question: What may be a reason why he gained weight ?
Option 0: He is taller now .
Option 1: He has an appetite now .
Option 2: He eats more sweets now .
Option 3: None of the above choices .
Answer: 1