Question Statement:
Which of the following flow characteristics distinguish 'Mass Flow' from 'Funnel Flow' in grain storage hoppers and silos?
Options:
- (A) In mass flow, all grain is in motion whenever any grain is withdrawn, eliminating stagnant dead zones
- (B) Mass flow exhibits a first-in, first-out (FIFO) flow sequence, minimizing grain spoilage from prolonged residence time
- (C) Funnel flow bins are prone to stable ratholing (piping) if grain possesses cohesive strength
- (D) Mass flow requires very shallow, flat-bottom hopper angles and rough wall surfaces