Some rows of a User table are shown below:

User

ucode

name

phone

scode

$7$

Alex

$847-3902$

UX

$8$

Tony

$203-3902$

PX

$9$

Charles

$$

BD

$11$

Mary

$877-3333$

BD

Which of the following queries retrieves the rows where there is no phone?

$$

Group of answer choices

SELECT $*$ FROM User WHERE phone $=$

SELECT $*$ FROM User WHERE phone NOT IS NULL

SELECT $*$ FROM User WHERE phone IS NULL

SELECT $*$ FROM User WHERE phone $>0$