A graph plots price cost versus output. $2$ lines labeled D and M R and $3$ curves labeled M C $3,$ M C $2,$ and M C $1$ are graphed.The horizontal axis is labeled output. Points Q $2$ and Q $1$ are marked on the horizontal axis from left to right. The vertical axis is labeled price cost. Points B and C are marked on the top of the vertical axis from bottom to top. A falling line labeled D begins at a point on the top of the vertical axis, passes through point E at $($Q $2,$ C$)$ and point A at $($Q $1,$ B$),$ and then goes down and to the right and ends at a point on the right end of the horizontal axis. A line labeled M R has the same starting point as D$,$ goes down steeply until a point below point A$,$ continues from a point above Q $1$ on the horizontal axis, goes down and to the right, crosses the horizontal axis at a point and ends at a point below the horizontal axis. A vertical line from point Q $2$ extends till point E and a horizontal line from point E extends till point C$.$ A horizontal line from point A extends till point B$.$ A vertical dashed line from point Q $1$ extends till point A$.3$ concave upward curves labeled M C $3,$ M C $2,$ and M C $1$ are at the top$-$left in order from top to bottom.

On the graph, if the oligopolist$$s MC curve shifts from MC$1$ to MC$2,$ the firm will charge

Multiple Choice

the same price as before and sell the same amount of output; total revenue will remain the same.

the same price as before and sell more output; total revenue will increase.

a higher price than before and sell less output; it can$$t be determined whether total revenue will change.

a higher price than before and total revenue will increase.