[Solved] Consider this GraphQL type:type Order { id: ID! items: [String!]! total: Float }Which statement is true about the items field? | GraphQL

GraphQL - Schema Definition Language (SDL)

Consider this GraphQL type:

type Order {
  id: ID!
  items: [String!]!
  total: Float
}

Which statement is true about the items field?

AIt is a non-null list containing non-null strings

BIt is a list of nullable strings and the list itself can be null

CIt is a list that can be null but contains non-null strings

DIt is a nullable list of nullable strings

Step-by-Step Solution

Solution:

Step 1: Analyze the type [String!]!
The inner String! means each string in the list cannot be null.
Step 2: The outer ! means the list itself cannot be null
So the list must exist and contain only non-null strings.
Final Answer:
It is a non-null list containing non-null strings -> Option A
Quick Check:
Non-null list + non-null items = C [OK]

Quick Trick: Outer ! means list required, inner ! means items required [OK]

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