Four Firms Control the Market for a Particular Good,resulting in an HHI

Multiple Choice

Four firms control the market for a particular good,resulting in an HHI of 6,650.Total industry sales are $1,750,and it is known that one firm has sales of $1,400 and another sales of $175.If each of the remaining two firms has the same sales,then we can conclude that the remaining two firms each have a market share of:

A) 0.05.
B) 0.20.
C) $90.
D) $200.