Which scenario best represents someone "letting the cat out of the bag"?

• Let the cat out of the bag (idiom):English Meaning: to allow a secret to be known, usually without intending to.Bangla Meaning: হাটে হাঁড়ি ভাঙা/গোপন কথা বলে ফেলা।• Example Sentence:1. She accidentally let the cat out of the bag about the surprise party when she mentioned it to the guest of honor.2. We were trying to keep the new product under wraps until the launch date, but someone let the cat out of the bag to the press.তাই সঠিক উত্তর হল- ক) "Revealing a surprise birthday party plan before the event" - কারণ এটি গোপন বিষয় প্রকাশ হওয়ার উদাহরণ।Source:1. Cambridge Dictionary.2. Accessible Dictionary by Bangla Academy.