Consider the following command:

UPDATE order$\_$details SET quantity $=$ quantity $--10$

What happens if we run this command in MySQL$?$

a$.)$

The quantity in the order$\_$details table for all records is incremented by $10.$

b$.)$

The quantity in the order$\_$details table for all records is decremented by $10.$

c$.)$

An error is thrown due to the $--.$

d$.)$

The order$\_$details table has all of the quantity set to the same value as it previously had.