Granting permission to users on different schema

I have tables in Schema A. I created views in Schema B using the tables in schema A.

I want to grant permissions to a user to select the data from view in Schema B.

For this to work i know we have to enable the grant option on tables in Schema A to user B. But I want to do it in a single script (This script has to be in schema B). Is there a way to do this using the user name/password of schema A.