According to the American Pregnancy Organization and the American College of Obstetricians Gynecologists, pregnant women should limit their caffeine intake to no more than 200 mg per day.

This is because caffeine can cross the placenta and affect the baby’s health, such as increasing the risk of miscarriage or low birth weight.

Choice B is wrong because 300 milligrams of caffeine per day is above the recommended limit for pregnant women.

Choice C is wrong because 400 milligrams of caffeine per day is twice the recommended limit for pregnant women.

Choice D is wrong because 500 milligrams of caffeine per day is more than twice the recommended limit for pregnant women.

To stay within the safe limit of 200 mg of caffeine per day, pregnant women should be aware of the amount of caffeine in different foods and drinks.

For example, one cup of instant coffee has about 60 mg of caffeine, one mug of tea has about 75 mg of caffeine, one can of soft drink has about 40 mg of caffeine, and one can of energy drink has up to 80 mg of caffeine.

Chocolate and decaffeinated coffee also contain small amounts of caffeine.