Which of the Following Was NOT Among Jomini's Four Primary

Which of the following was NOT among Jomini's four primary rules for battle?

A) when concentrating mass upon decisive points, do so randomly over an extended period of time
B) maneuver one's forces to bear upon the enemy's most important points
C) disrupt his communications without placing one's own forces in a vulnerable position
D) concentrate one's forces on only part of the enemy's force