Which of the Following Statements Regarding Gantt Charts Is True

Which of the following statements regarding Gantt charts is true?

A) Gantt charts give a timeline and precedence relationships for each activity of a project.
B) Gantt charts use the four standard spines of Methods,Materials,Manpower,and Machinery.
C) Gantt charts are visual devices that show the duration of activities in a project.
D) Gantt charts are expensive.
E) All of the above are true.