Which expression correctly says “two women”?

Number Nouns: Rules from One to One Thousand

• امْرَأَتَانِ اثْنَتَانِ
• امْرَأَتَانِ اثْنَانِ
• امْرَأَةٌ اثْنَتَانِ
• امْرَأَتَانِ وَاحِدَةٌ