simulation

// answer api json

"answer": [
  "A",
  "A",
  "B"
]


*********************************************************
// final answer json

"answer": [
  {
    "answer": "A",
    "answer_id": 1,
    "question_id": 1
  },
  {
    "answer": "AB",
    "answer_id": 2,
    "question_id": 2
  }
],


*********************************************************
// summary answer json

"summary": [
  {
    "section_id": 1,
    "score": 100,
    "parts": [
      {
        "part_id": 1,
        "score": 1
      }
    ]
  }
]


*********************************************************
// check answer json

[
  {
    "id": 1, // section
    "parts": [
      {
        "id": 1, // part
        "questions": [
          {
            "id": 1, // question
            "answers": [
              {
                "id": 1, // answer
                "score": 1,
                "answer": "A"
              },
            ]
          },
          {
            "id": 2,
            "answers": [
              {
                "id": 2 // answer
                "score": 1,
                "answer": "A"
              },
              {
                "id": 3// answer
                "score": 2,
                "answer": "B"
              },
            ]
          },
        ]
      }
    ]
  }
]