Convert as Indicated $7200 \mathrm { sq } \mathrm { ft }$

Convert as indicated.
-The field behind one of the dormitories at State College contains approximately 800 square yards of grass. Convert this to square feet.

A) $7200 \mathrm { sq } \mathrm { ft }$
B) $2400 \mathrm { sq } \mathrm { ft }$
C) $266 \frac { 2 } { 3 } \mathrm { sq } \mathrm { ft }$
D) $88 \frac { 8 } { 9 } \mathrm { sq } \mathrm { ft }$