When market price of a security has reached an equilibrium, transaction cost will be?

The correct answer is (A)

Explanation:

Equilibrium in a security market shows that buyers and sellers have identified a price at which they can sell and purchase securities. This means that the gap between the bid price and ask price is small. Active trading takes place in a state where a security market reaches equilibrium, in this situation the commission or transaction cost tends to be lower.

there's 11 people for the 1st position. then, no matter who gets it, there's only 10 left for the second, and then 9 left for the third. 11 x 10 x 9 = 990.   the answer is there are 990 different ways the positions can be filled by these applicants

yes the correct answer was

b.the increased supply will create a surplus.