In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
These five sisters (1)/ care for one other (2)/ like mothers. (3)/ No Error (4)/
A boy leaves his school and travels 20 km towards the north. He takes a left turn and travels 30 km, then he turns towards the east direction and travels 50 km further. Finally, he turns to his right and travels 20 km more. Which direction is he now with respect to his school?