Q$2.$ Multiple choices $(5$ points each$).$

Choose one and only one which is not true, or you think the least close to correct.

$(1)$

a$)$ The system will not be able to detect$/$raise a user defined exception.

b$)$ Each system defined exception has an individual code number, but very few have name.

c$)$ The system engine will automatically detect any system defined exceptions.

d$)$ The system engine will not automatically detect any user$-$defined exceptions.

e$)$ Once a system defined exception is associated with a name, then the system will not automatically detect $($raise$)$ this exception anymore.