Which of the Following Statements About Hfr Cells and Bacterial

Which of the following statements about Hfr cells and bacterial conjugation is false?

A) Insertion sequences (IS) are present in both the F plasmid and the bacterial chromosome.
B) IS elements are transposable elements.
C) Insertion of the F plasmid into the bacterial chromosome to produce an Hfr cell causes the loss of an equivalent portion of the chromosome.
D) Hfr cells can transfer the whole chromosome in about 90 minutes.
E) The number of bacterial genes that are transferred into the recipient cell depends on how long the conjugation bridge is maintained.