Which of the following vegetable rich in iron?

Bitter gourd is the vegetable among the following options that are rich in Iron.
Bitter gourd is a rich source of vitamins and minerals. It contains iron, magnesium, potassium and vitamins like A and C. It contains twice the calcium of spinach and beta-carotene of broccoli. Various anti-oxidants and anti-inflammatory compounds are present in bitter gourd.
100 grams of bitter gourd gives about 19 calories of energy. Around 3.5 grams of carbohydrates and 2.4 grams of fibre are present in 100 grams of karela while it contains only 150 mg of fats and 930 mg of proteins. It also has a high water content of 87 grams.