If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement is incorrect?

If an experiment has 5 factors and no replicates for a 2-level Experimental Design with 16 experimental runs which statement is incorrect?
A . The Experimental Design is half-fractional
B . The Main Effects are confounded with only 4-way interactions
C . The Main Effects for the 5 factors are not aliased or confounded but the 2-way interactions are confounded with the 3-way interactions
D . The experiment has 8 experimental runs with the first factor at the high level

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Answer: C