Joyce Went to the Baby Store to Purchase Wall Decorations

Joyce went to the baby store to purchase wall decorations for her 4-month-old son's bedroom. The clerk suggested that babies lack colour vision and prefer black and white decorations with high-contrast edges. What would be a valid response to this clerk?

A) You're right, babies prefer high-contrast edges, and they only see the world in black and white.
B) You're right, babies prefer high-contrast edges, but they prefer contrasts that decrease in complexity as they get older.
C) I'm not sure I agree. My psychology professor says that colour vision is present at birth, although it does not approximate adult levels until closer to 4 months.
D) Since my baby is 4 months old, I'm sure he prefers pastels.