A Customer Has a Number of Inefficient Regex Replacement Transforms

Multiple Choice

A customer has a number of inefficient regex replacement transforms being applied. When under heavy load the indexers are struggling to maintain the expected indexing rate. In a worst case scenario, which queue(s) would be expected to fill up?

A) Typing, merging, parsing, input
B) Parsing
C) Typing
D) Indexing, typing, merging, parsing, input