Please answer the following question: Fact 1: Plasma cells are activated B cells that secrete antibodies. Fact 2: Plasma Cells Plasma Cells Plasma cells are the mature form of B-lymphocytes. Given the two facts above, answer the question "The mature form of what kind of cell secretes antibodies?" with the following options: - more abundant - it needs them - positive - graptolites - A Greek letter - barnacles - B-lymphocytes - homogenous
A:
B-lymphocytes