Table 4-5 -Refer to Table 4-5.If These Are the Only Four Sellers

Multiple Choice

Table 4-5

-Refer to Table 4-5.If these are the only four sellers in the market,then when the price increases from $4 to $6,the market quantity supplied

A) decreases by 10 units.
B) decreases by 20 units.
C) increases by 10 units.
D) increases by 20 units.