Consider a Small Parcel of Gas in the Cloud Out

Multiple Choice

Consider a small parcel of gas in the cloud out of which the Sun formed that was initially located in the accretion disk at a distance of 10 AU from the Sun and rotating around it with a speed of 10 km/s. If this parcel of gas eventually found its way to a distance of 1 AU from the Sun without changing its orbital angular momentum, then what would be its new rotation speed?

A) 100 km/s
B) 0.1 km/s
C) 0.001 km/s
D) 10 km/s
E) 1,000 km/s