Which of the following is true of the obturator foramen？

A.The obturator foramen is enclosed by the pubis and ischium

B.The obturator foramen consists of the ilium, pubis, and ischium

C.The obturator foramen is formed by the sacrum and the ischium

D.The obturator foramen lies behind and above the hip bone

正确答案：The obturator foramen is enclosed by the pubis and ischium