Which Statement(s) Are Incorrect About Fractional Factorial Designs

Which statement(s) are incorrect about Fractional Factorial Designs?

A) A Half Fractional Design for 5 factors has the same number of experimental runs as a Full Factorial Design for 4 factors assuming no repeats or replicates or Center Points
B) Quarter Fractional experiments can exist for those with 4 factors
C) Resolution V design is desired while controlling costs of experimentation
D) Half Fractional experiments do not exist for those designs with only 2 factors