How is the syntax for one selected answer where another answer must also be selected in a select_multiple question?

Dear community,
I want to create a syntax constarian in XlsForm with the following constrain :

  1. Apple must be selected,
  2. If Orange is selected, Mango must be selected.
  3. Banana and watermelon can be selected or not
    Can anyone help me?

Create a note field, make it "required" and use relevance to control this.

Thank you sir awafo_donald

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