1.Suppose there are nine sellers and nine buyers each willing to buy or sell one

1.Suppose there
are nine sellers and nine buyers each willing to buy or sell one unit of a
good with values ($60 $50 $45 $40 $35 $30 $25 $20 $15).
Suppose there is a single market maker in this market. What
is the optimal bid-ask spread?a.$15 bid; $60
askb.$20 bid; $50
askc.$25 bid; $45
askd.$30 bid; $40
ask2.Suppose there
are nine sellers and nine buyers each willing to buy or sell one unit of a
good with values ($60 $50 $45 $40 $35 $30 $25 $20 $15).
Suppose there is competition among several market makers and the spread
has been forced down to $10. H0w many goods are traded?a.Fiveb.Fourc.Threed.Two