Explain to me verb pattern

{
  "type": "single-choice",
  "correctOptionId": "explained-to-me",
  "options": [
    {
      "id": "explained-to-me",
      "label": "She explained the rule to me.",
      "rationale": "Explain takes the thing first, then to + person."
    },
    {
      "id": "explained-me",
      "label": "She explained me the rule.",
      "rationale": "Explain me the rule is a common learner pattern, but it is not standard."
    },
    {
      "id": "explained-me-rule",
      "label": "She explained me rule.",
      "rationale": "This drops both the article and the correct verb pattern."
    },
    {
      "id": "explained-for-me",
      "label": "She explained the rule for me.",
      "rationale": "For me can mean on my behalf, not the normal listener pattern."
    }
  ]
}