Which statement returns the city address and the number…

Examine the description of the CUSTOMERS table:
The CUSTOMER_ID column is the primary key for the table.
Which statement returns the city address and the number of customers in the cities Los Angeles
or San Francisco?

A.
SELECT city_address, COUNT(*)
FROM customers
WHERE city_address IN ( `Los Angeles’, `San Fransisco’);

B.
SELECT city_address, COUNT (*)
FROMcustomers
WHERE city address IN ( `Los Angeles’, `San Fransisco’)
GROUP BY city_address;

C.
SELECT city_address, COUNT(customer_id)
FROMcustomers
WHERE city_address IN ( `Los Angeles’, `San Fransisco’)
GROUP BYcity_address, customer_id;

D.
SELECT city_address, COUNT (customer_id)
FROM customers
GROUP BY city_address IN ( `Los Angeles’, `San Fransisco’);

Explanation:
Not C: The customer ID in the GROUP BY clause is wrong