No rows, because OR conditions are not allowed in CALCULATE filters, although it sounds technically credible, it does not align with how DAX functions propagate context in this scenario.

Rows where the product category is Bikes OR the sales row has a discount greater than zero

Only rows where category is Bikes AND discount is greater than zero

Only rows where category is Bikes, because OR is ignored in CALCULATE

A syntax-level statement that appears valid but actually describes iterator usage in a context where scalar evaluation is required