If an Experiment Has 5 Factors and No Replicates for a 2-Level

If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement(s) are correct? (Note: There are 3 correct answers) .

A) The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions
B) The Main Effects are confounded with only 4-way interactions
C) The Experimental Design is half-fractional
D) The experiment has 8 experimental runs with the first factor at the high level
E) The experiment has only 4 experimental runs with the 5th factor at the high level