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I would say as the two variables named c are not part of the same field. Even if technically acceptable, any form of cs is hard to read. Italics applied to only one letter, especially a roun...
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#4: Attribution notice removed
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/20353 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
I would say > as the two variables named c are not part of the same field. Even if technically acceptable, any form of cs is hard to read. Italics applied to only one letter, especially a round one like c are hard to spot. I changed "both" to "the two" because both invites the reader to consider two items as one, whereas here you want the reader to consider them separately.