Buryecs Co – options

Dear Mr Moffat,

I am trying not to get lost in buy/sell and put/call options directions as well as in what the basis currency is.

Thought I got lost with deciding on put/call option in Buryecs Co question. Could you please help me ti find in error of my line of thought?

1) I memorized from one of the technical videos the logic:

– if I buy or borrow – I need to buy futures (or buy call option)
– if I sell or save (deposit) – I need to sell futures (or buy put option)
Exception – interest rates futures where it works the opposite way.

2) I need to decide on what is the basis currency in order to figure out whether to buy or sell basis currency and hence apply logic from p.1.

So, in Buryecs Co question, they give options strike prices in dollars for 1 eur.
Hence following the logic from video lecture I think that basis currency is euro.

I will receive dollars and hence I will need to sell dollars and BUY EURO which is my domestic currency.

But based on the answer –> we buy put option, meanin we need to sell basic currency, meaning our basic currency is dollar, right?

I am completely lost where is my thought error here…

Could you kindly help me to figure out?

Thank you so much in advance!