If P and Q are positive integers, P - 3 is divisible by 4 and Q - 1 is divisible by 4, all of the following could be the value of P - Q Except?  Choices.
A) 1 B) 2 C) 6 D) 18 E) 14
P-3 = 4Q   =&gt; P = 4Q + 3 = 3,7,11,15,19,23,27,31,35,39   Q-1 = 4P   =&gt; Q = 4P + 1 = 1,5,9,13,17,21,25,29,33,37,41   2=3-1   6=15-9   18=27-9   14=31-17   So , we can see that all the answer choices are possible here except 1
<result>A</result>
If P and Q are positive integers, P - 3 is divisible by 4 and Q - 1 is divisible by 4, all of the following could be the value of P - Q Except?