Solve Simplify the Answer $11 \frac { 1 } { 4 }$

Multiple Choice

Solve. Simplify the answer.
-June wants to work for $11 \frac { 1 } { 4 }$ hours at her part-time job this week. She has already worked $5 \frac { 1 } { 2 }$ hours. How many more hours does she need to work?

A) $4 \frac { 3 } { 4 } \mathrm { hr }$
B) $6 \frac { 3 } { 4 } \mathrm { hr }$
C) $5 \mathrm { hr }$
D) $5 \frac { 3 } { 4 } \mathrm { hr }$