5. [4] Given a folder with (exactly) the following files:
prog1.cc prog2.cc prog3.cc Makefile

where Makefile has the following contents:
OBJ= prog1.o prog3.o
OPTS= -g -c -Wall -Werror
prog: $(OBJ)
g++ -o prog $(OBJ)
prog1.o: prog1.cc prog3.cc
g++ $(OPTS) prog1.cc
prog2.o: prog3.cc
g++ $(OPTS) teststack.cc
prog3.o:
g++ $(OPTS) prog3.cc

Assuming that all the .cc files compile and link correctly and you type make on the command line,
what will then be the contents of the folder? (List the files)