Why Do Astronomers Believe That the Angular Momentum Problem Is

Why do astronomers believe that the angular momentum problem is no longer an objection to the solar nebula problem?

A) The current theory assumes that the solar nebula originally rotated slower than previously thought.
B) Most of the angular momentum has been found to be contained in the planet's orbits.
C) The sun's magnetic field interacted with gas leaving the nebula and slowed the sun's rotation.
D) The solar nebula theory has been proven false,so the angular momentum problem doesn't apply.
E) The extra angular momentum is accounted for by the orbits of the comets.