What Characteristic of Long Period Comets Suggest They Come from the Oort

Multiple Choice

What characteristic of long period comets suggest they come from the Oort cloud?

A) They have longer Type II tails than short period comets.
B) Their orbits have random inclinations with respect to the ecliptic plane.
C) Their orbits are nearly circular.
D) They tend to appear larger in diameter than short period comets.