Imagine That a Researcher Finds a Patch of Grass Growing

Imagine that a researcher finds a patch of grass growing out of the asphalt in a parking lot (apparently isolated from any nearby grass populations) . What can the researcher conclude about this patch of grass?

A) Without any further study, the researcher can state that this patch of grass is the result of asexual reproduction occurring in the nearest grass population.
B) Because this patch of grass is isolated from other grasses, the researcher can state (without any further study) that this grass is the result of seed dispersal and sexual reproduction occurring in the nearest grass population.
C) The researcher can compare the genetic sequence of grass in this patch to the sequences of a nearby grass population. If the sequences are identical, the researcher can conclude that this patch of grass is the result of asexual reproduction.
D) The researcher can look for evidence of horizontal stems. If such stems exist, the researcher can conclude that this patch of grass is the result of sexual reproduction occurring in a nearby grass population.