in a cell based approach to portfolio construction, the manager

a) divides the benchmark into cells based on characteristics, and then try to find assets to pupulate each cell with the same weights as the benchmark

b) tries to find the exposure of the benchmark with respect to each factor, and then tries to create a portfolio with the same exposure to the risk factors

c) buys a subset of the actual assets contained in the benchmark by splitting them into cells

d) focuses on matching duration