FRA - Temporal and current rate method CFAI Mock

Under the Thames vignette,

Which ratios would be unaffected by the choice of translation method:

Operating Profit margin - EBIT/Revenue - Temporal: Mix/avg. Current: Avg/Avg

Receivables turnover ratio - Revenue/Receivables - Temporal: Avg/Current. Current: Avg/Current

Current ratio - CA/CL - Temporal: Current/Current Current: Current/Current

Both Receivables turnover ratio and Current ratio have the same rates under both methods, therefore not affected by choice of translation method. Why would the answer be Rec turnover ratio. I don’t get this.

Current asset can be non monetary assets (eg : Inventory), so under temporal the numerator is Historic.

Oh my Goooood I forgot about Inventory…