Which of the Following Statements Are Correct? (Select Multiple)

Which of the following statements are correct? (Select multiple)

A) Some of the dynamic routing protocols calculate the best path base on the cost value. However, Different routing protocol calculates the metric in different ways.
B) The calculation of cost may be based on "single" link attribute or several link attributes such as delay, hop count, bandwidth and etc.
C) When several dynamic routing protocols have the best routes to the same destination, all these routes will be added to the routing table.
D) The calculation method of the preference and cost in the routing table are the same.