Analyze the statements about the article and mark T, if true, or F, if false.

( ) When you buy a train ticket in Italy, it’s easy to understand you must validate it.
( ) Tourists should be careful with scams, like free gifts that are not actually free and fake souvenirs.
( ) Public restrooms are usually free, but they are very dirty.
( ) Buying tickets online for the most popular tourist attractions is more expensive than buying onsite.

The correct order of filling the parentheses, from top to bottom, is: