Fibers in Angiosperm Wood Can Support Large Mechanical Loads Because

Fibers in angiosperm wood can support large mechanical loads because:

A) their cell walls are very dense compared to vessels or tracheids.
B) their cell walls are very thick, almost filling the cell.
C) their diameter is much larger than their length.
D) they can make up a large fraction of the wood due to the efficiency with which vessels can conduct water.