Which of the following statements accurately describes the set spana1, a2?
A) It includes only the line passing through a1 and the origin, and the line passing through a2 and the origin.
B) It encompasses a plane passing through both a1 and a2 and the origin.
C) It represents a three-dimensional space passing through a1 and a2 in addition to the origin.
D) It signifies a set including vectors a1 and a2 along with their linear combinations extending to infinity.
