SORRY, BUT YOU HAVE CHOSEN AN INCORRECT ANSWER.

A, B, C and D are all legal.  Only in E and F does the player not have "part of each foot either on the touch line or on the ground outside the touch line."  In E, the left foot is legal but the right foot is not, so judge it as an illegal throw-in.  In F, both feet are on the field, leading to a violation and throw-in for the other team from that same location.