Why Might Asexual Reproduction Typically Result in Local Colonization, While

Why might asexual reproduction typically result in local colonization, while the products of sexual reproduction are typically dispersed?

A) The variation resulting from meiosis and the union of gametes means some individuals will have a chance of colonizing diverse distant environments successfully.
B) Vegetative propagation is more efficient than sexual reproduction when the current generation is well adapted to the local environment.
C) Asexual reproduction is only a "last ditch" alternative for plants when sexual reproduction fails.
D) Sexual reproduction is only a "last ditch" alternative by which plants can "escape" the condition of being poorly adapted to the local environment.