Which index could be used to measure inflation from the perspective of the seller?

Inflation from the Seller's Perspective:

The Producer Price Index (PPI) measures changes in the prices received by sellers for their goods and services.

It reflects production cost pressures, making it distinct from consumer-focused indices.

Elimination of Other Options:

A & C: Retail Price Index (RPI) and Consumer Price Index (CPI) measure inflation from the buyer's perspective.

D: Inflation Price Index is not a recognized term.

References:

ICWIM Module 1: Explanation of inflation measurement indices.