The correct answer is true.
It is true that in Latin American and some parts of Europe, a mutual kiss on the cheek is a common greeting.
When people greet with a kiss on the cheek they are showing a warm "hello" with affinity and respect. This means no kind of intimacy, just a friendly way to greet another person. There are other countries, basically in Mexico and Latin America, where people is warmly and they add a hug to the greeting.
