-Refer to the Above Figure $P _ { 1 }$ )While Under Monopoly Output Is Too Large

-Refer to the above figure.Which of the following statements is true?

A) Under perfect competition,the efficient price is charged,which is the lowest price possible ( $P _ { 1 }$ ) while under monopoly output is too large (
$\mathrm { Q } _ { 4 }$ ) and price is too high (
$\mathrm { P } _ { 4 }$ ) .
B) Under perfect competition price equals marginal cost ( $\mathrm { P } _ { 3 }$ ) while under monopoly price (
$\mathrm { P } _ { 4 }$ ) is greater than marginal cost (
$P _ { 1 }$ ) .
C) The rate of output is the same under both monopoly and perfect competition ( $\mathrm { Q } _ { 1 }$ ) ,but price is higher under monopoly (
$\mathrm { P } _ { 4 }$ rather than
$P _ { 1 }$ ) .
D) Price equals marginal cost under both monopoly and perfect competition,but output is too low under monopoly ( $\mathrm { Q } _ { 1 }$ instead of
$\mathrm { Q } _ { 2 }$ ) .