Which one of the following elements defines drop down list? O a.

O b. O c. O d. Assume you have the following uri "http://localhost:8080/ex/form_submit.php? school_name=Paat&Student_name=Amna&sub to be passed to grade.php file. Write the php code that assigns a variable to each of the passed parameter. No need to write php opening and closing tags. A BI E lil Maximum file size: 64MB, maximum number of files: 1 Files Accepted file types Text file phot Complete the following html to read user name and password and submit button. O d.