Which of the following are considered legacy protocols?

The PV function would be best suited to calculate the future value of an investment

Indicate whether the statement is true or false

When searching for a node in a linked list to remove, we use a loop to move a pointer through the list. We want the pointer to stay one node in front of the node we wish to remove because:

A. we have to link the node to remove to the node in front of it B. we have to link the node in front of the node to remove to the node after the node to remove (if there is one) C. if we did not, there would be memory leak for the node in front of the node to remove D. we cannot free the node to remove if the pointer is pointing to it