If the activity of thymosin β4 was inhibited in fibroblasts,the overall effect would be:

A)a decrease in cell locomotion because less actin would be recruited to the leading edge.
B)an increase in cell locomotion because there would be a higher concentration of actin available.
C)no change in cell locomotion because thymosin β4 doesn't interact with Rho,Rac,or Cdc42.
D)none of the above