With no explanation, label text_A→text_B with either "NOT ENOUGH INFO", "REFUTES" or "SUPPORTS".
text_A: The plantation era was in the beginning a significant factor in the Antebellum South 's economic growth .
text_B: The plantation era , while it was in large part the source of the South 's initial economic prosperity , was also the reason why the South lagged in productivity starting in the early to mid 19th century .
SUPPORTS.