In the formula P = 3/(r+3)^3, if r is halved, then P is multiplied by	Choose the correct choice from the following options.
A) 125/64	B) 125	C) 1/64	D) 64/125	E) 1/125
Say r=2 =&gt; P1 = 3/125   when r=1; P2 = 3/64   P2 = 125/64*P1.   125/64nswer : 125/64
<result>A</result>
In the formula P = 3/(r+3)^3, if r is halved, then P is multiplied by