[Solved] Examine this delete mutation:mutation { deleteProduct(productId: 789) { success } }Assuming productId is defined as a String in the schema, what is the error? | GraphQL

GraphQL - Mutations

Examine this delete mutation:
mutation { deleteProduct(productId: 789) { success } }
Assuming productId is defined as a String in the schema, what is the error?

AThe success field is not valid in the response

BThe mutation name should be deleteProducts instead of deleteProduct

CThe productId value should be a quoted string, not a number

DThe mutation should not have any arguments

Step-by-Step Solution

Solution:

Step 1: Check argument type
The schema defines productId as a String, so the value must be quoted.
Step 2: Identify error
Passing 789 without quotes treats it as a number, causing a type mismatch error.
Final Answer:
The productId value should be a quoted string, not a number -> Option C
Quick Check:
String arguments require quotes in GraphQL mutations [OK]

Quick Trick: Always quote string arguments in mutations [OK]

Common Mistakes:

Passing string IDs without quotes
Assuming numeric IDs don't need quotes
Misnaming mutation functions

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Examine this delete mutation:

Step 1: Check argument type

Step 2: Identify error

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