A reference variable is a variable that references the memory location of another variable. Any change made to the reference variable.... (Choose the statement that best completes this sentence.) Select one:

a. will just change the value stored in the reference variable

b. will be written to a file so it won't be lost

c. will be copied to the variable it references

d. will be lost when the function where it is defined returns

e. will actually be a change to the variable it references.