They don't recalculate each time the record is viewed - only when a record is edited. Formula fields should be updated dynamically each time a record is retrieved.
I believe B is always correct, C could be correct in Trigger context
https://salesforce.stackexchange.com/questions/107799/formula-field-calculation-in-order-of-execution
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VishalPal
7 months, 3 weeks agolmeloni91
2 years, 4 months agoJevade16
2 years, 7 months ago