Which of the following are intermediates in the acid catalyzed aldol reaction of propanal to form 2-methyl-pent-2-enal? 
Definitions:
Non-Numeric Method
Decision-making or evaluation approaches that do not rely on quantitative numbers for analysis.
Assigned Cycle Time
The specific duration designated for the completion of a task or process in a production cycle.
Efficiency
The ratio of the output produced to the input used in the production process, often used as a measure of performance in operations and processes.
Process Layout
An arrangement of resources in a production system where similar processes are grouped together, optimizing for flexibility in job execution.
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