As an Adult Ages, the Symphysial Surface of the Pubis

Multiple Choice

As an adult ages, the symphysial surface of the pubis

A) becomes more flattened, and the bony ridge at its circumference progressively disappears.
B) becomes more flattened, and a bony rim forms at its circumference.
C) becomes more billowed, and the bony ridge at its circumference progressively disappears.
D) becomes more billowed, and a bony rim forms at its circumference.