You are implementing Dynamics 365 Business Central.

In Dynamics 365 Business Central, posting groups automatically direct entries to the appropriate general ledger accounts based on transaction type.

Customer Posting Groups

Define how customer transactions are posted to the general ledger.

They handle accounts such as receivables and also manage payment differences (e.g., rounding or short payments).

Correct for: Automatic posting of received payment differences.

Vendor Posting Groups

Define how vendor transactions are posted.

They specify the payables account in the G/L where vendor balances are tracked.

Correct for: Automatic posting to the payables account.

Inventory Posting Groups and Inventory Posting Setup

Define how inventory transactions post to G/L accounts.

They also control postings to work in progress (WIP) accounts, including location-specific accounts.

Correct for: Automatic posting to different work in progress balance accounts, depending on the location.

Why not the others:

Bank Account Posting Groups → Define which G/L accounts are linked to bank accounts, not payment differences, payables, or WIP.

General Posting Setup → Determines revenue, COGS, and VAT accounts based on business/product posting groups, not the specific actions in this scenario.