Use a Table of Numerical Values Of $f ( x , y )$

Multiple Choice

Use a table of numerical values of $f ( x , y )$ for $( x , y )$ near the origin to make a conjecture about the value of the limit of $f ( x , y )$ as $( x , y ) \rightarrow ( 0,0 )$ .
$$f ( x , y ) = \frac { x ^ { 2 } y ^ { 3 } + x ^ { 3 } y ^ { 2 } - 7 } { 1 - x y }$$

A) $- 7$
B) 7
C) 1
D) $- 1$
E) the value cannot be determined