Which of the following SQL statements changes the size of the Title column in the BOOKS table

Question:

Which of the following SQL statements changes the size of the Title column in the BOOKS table from the current length of 30 characters to the length of 35 characters?
a. ALTER TABLE books CHANGE title VARCHAR(35);
b. ALTER TABLE books MODIFY (title VARCHAR2(35));
c. ALTER TABLE books MODIFY title (VARCHAR2(35));
d. ALTER TABLE books MODIFY (title VARCHAR2(+5));