Which analyzer is used in a multi match query?

Elastic Stack Elasticsearch
1

I have an index with several fields, among which I have 3 fields, each defined with a different language analyzer (german, english and french).

Which analyzer will be used in a multi-match query ? Will Elasticsearch use the specific analyzer separately for each field ?

GET lessons-list-fr-en/_search
{
  "from": 0,
  "size": 10,
  "query": {
    "multi_match" : {
      "query":    "Introducing", 
      "fields": [ "title", "description", "category"] 
    }
  }
}

Or should I use a combinaison of 'should' queries ?

GET lessons-list-en-fr/_search
{
  "from": 0,
  "size": 10,
  "query": {
    "bool": {
      "should": [
        {
          "match": {
            "title": "Introducing"
          }
        },
        {
          "match": {
            "description": "Introducing"
          }
        },
        {
          "match": {
            "category": "Introducing"
          }
        }
      ]
    }
  }
}
2

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