Which of the following is the correct syntax to start a mutation with an input variable named input of type CreateUserInput!?

easy📝 Syntax Q12 of 15

GraphQL - Mutations

Which of the following is the correct syntax to start a mutation with an input variable named input of type CreateUserInput!?

Amutation createUser($input: CreateUserInput!) { ... }

Bquery createUser(input: CreateUserInput!) { ... }

Cmutation createUser(input CreateUserInput!) { ... }

Dmutation createUser($input CreateUserInput!) { ... }

Step-by-Step Solution

Solution:

Step 1: Recall mutation syntax with variables
Variables in GraphQL mutations start with $ and have a colon before the type.
Step 2: Check each option
mutation createUser($input: CreateUserInput!) { ... } correctly uses $input: CreateUserInput!. Others miss $ or colon.
Final Answer:
mutation createUser($input: CreateUserInput!) { ... } -> Option A
Quick Check:
Variables need $ and colon [OK]

Quick Trick: Variables start with $ and use colon before type [OK]

Common Mistakes:

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