Matlab GUI editboxes and pushbuttons multiple choice question

% Question{12}: Given ClickMeButton and HelloEditBox on MyFirstGUI, to

% update the textbox when the button is clicked, code would be written in...

% A. ClickMeButton_CreateFcn

% B. HelloEditBox_CreateFcn

% C. ClickMeButton_Callback

% D. HelloEditBox_Callback

% E. MyFirstGUI_OpenFcn

Answer{12}='';

% Question{13}: Given ClickMeButton and HelloEditBox, to update the textbox

% when the button is pushed, code would be written similar to...

% A. set(hObject,'string','Hello Gregory!');

% B. set(handles.HelloEditBox,'string','Hello Gregory!');

% C. set(handles.HelloEditBox,'data','Hello Gregory!');

% D. set(hObject,'data','Hello Gregory!');

% E. set(handles.ClickMeButton,'string','Hello Gregory!');

Answer{13}='';