Directions (Q.Nos. 16-19): Following sentences have been transformed as per directions given in their brackets. Choose the correct sentence from the choices given.
16. The apple was too sour to eat. (Remove ‘too’)
(1) The apple was very sour.
(2) The apple was extremely sour to eat
(3) The apple was so sour that it can not be eaten.
(4) The apple was so sour that it could not be eaten.