What is the result of PKB phosphorylation in the context of insulin signaling?

PKB phosphorylation increases GLUT4 expression and glycogen synthesis, reducing blood glucose levels.

PKB phosphorylation inhibits GLUT4 expression and glycogen synthesis.

PKB phosphorylation decreases GLUT4 expression and glycogen synthesis, increasing blood glucose levels.

PKB phosphorylation has no effect on GLUT4 expression or glycogen synthesis.