Which of the following outlines a key difference between broadbent's and triesman's models of attention?

a) Broadbent's model emphasizes selective attention, while Treisman's focuses on divided attention.
b) Broadbent's model suggests limited capacity for processing information, while Treisman's posits unlimited capacity.
c) Both models propose identical mechanisms for attention allocation.
d) Broadbent's model is based on bottom-up processing, while Treisman's is based on top-down processing.