A Businesswoman's Flight Leaves Atlanta at 1 P $2 \frac { 3 } { 4 }$

Multiple Choice

A businesswoman's flight leaves Atlanta at 1 P.M. and arrives in New York at 3:45 P.M. Express the duration of the flight as a mixed number.

A) $2 \frac { 3 } { 4 }$  hr.
B) $4 \frac { 3 } { 4 }$  hr.
C) $4 \frac { 1 } { 4 }$  hr.
D) $3 \frac { 3 } { 4 }$  hr.
E) $2 \frac { 1 } { 4 }$  hr.