Could someone help me with question A,B,C and D? Java questions

A. Practices such as the one depicted by the following program should be avoided. Assume that s desig- nates a valid instance of some stack implementation and that value is of the correct type. True or False boolean done false while done try value s pop catch (Empty StackException e) done true B. A method that throws unchecked exceptions must declare them using the keyword throws, otherwise a compile-time will be produced. True or False Good object oriented programming practices suggest that a programmer must always catch all the C. exceptions generated by the methods being called. True or False D. Consider two em BinarysearchTree objects and the method add presented in class. Adding the same elements, but in different order into the two trees, will always lead to trees of the same height True or False. E. Consider the binary search tree below