Which of the below statements is/are TRUE ?

Select one or more:

a.In call by reference, the formal parameters are an alias or nickname for the actual parameters.

b.In call by value, changing the values of the formal parameters within the function will correspondingly affect the value of the actual parameters.

c.In call by value the formal parameter is a COPY of the actual parameter passed to the function.

d.In call by reference, changing the value of the formal parameter within the function will not change the value of the actual parameter.