Which of the Following Describes the Direction of the Central

Multiple Choice

Which of the following describes the direction of the central ray for an axiolateral projection of the hip (Danelius-Miller) ?
1) Perpendicular to the IR
2) Perpendicular to the long axis of the femoral neck
3) Perpendicular to the long axis of the femur

A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 1, 2, and 3