Which of the following colors belong to cool colors

A．It shows the reason why people think some colors are warm and others are cool.
B．Warm colors remind people of warm days.
C．Cool colors remind people of cool days.
D．People have an agreeable opinion of warm colors and cool colors.

A．Animals move in order to find food more easily.
B．The migration of the fish called "salmon" is the most famous migration.
C．Living things move from one place to another because they like to travel.
D．Sometimes we know why and how living things move from one place to another, but sometimes we don't.