In which of the following cases would it make the most sense to use a b$-$tree index?

a$.)$

SELECT $*$ FROM invoice$\_$line

WHERE quantity $>2$;

b$.)$

SELECT $*$ FROM customer

WHERE first$\_$name like $\text{'}\%$a$\%\text{'}$;

c$.)$

SELECT $*$ FROM album

WHERE album$\_$id BETWEEN $2$ AND $5$;

d$.)$

SELECT $*$ FROM customer

WHERE phone $=\text{'}+55(11)3033-5446\text{'}$;