Read the following question and decide which of the given statements is/are sufficient to answer the question.
If U, V and W are negative numbers, and Z is a number, then is Z positive?
Statements:
1. Z = V - W
2. Z x V = U

A

Either 1 or 2 is sufficient to answer the question.

B

1 alone is sufficient while 2 alone is not sufficient to answer the question.

C

2 alone is sufficient while 1 alone is not sufficient to answer the question.

D

Both 1 and 2 are sufficient to answer the question