A Square $1$ on a Side, Is Cut Out of Each Corner

Multiple Choice

A square, $1$ . on a side, is cut out of each corner of a square sheet of aluminum. (See the figure below.) The sides are folded up to form a rectangular container with no top. The volume of the resulting container is $$225 \mathrm { in } ^ { 3 }$$ . What was the size of the original sheet of aluminum?

A) $18 \mathrm { in } \times 18 \mathrm { in }$
B) $17 \text { in } \times 17 \text { in }$
C) $10 \text { in } \times 10 \text { in }$
D) $19 \text { in } \times 19 \text { in }$
E) $16 \text { in } \times 16 \text { in }$