A.  $x^2+y^2+z^2-6x-4y-8z+3=0$

B.  $x^2+y^2+z^2-6x-4y-8z+1=0$

C.  $x^2+y^2+z^2-6x-4y-8z+2=0$

D.  $x^2+y^2+z^2-6x-4y-8z+4=0$ 

A.  $x^2+y^2+z^2+2x-4y+6z-10=0$

B.  $x^2+y^2+z^2-2x+4y-6z-10=0$

C.  $x^2+y^2+z^2-2x+4y+2z+18=0$

D.  $x^2+y^2+z^2+2x-4y-2z-18=0$

A.  $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=9.$

B.  $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=3$

C.  $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=9$

D.  $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=3$ 

A. $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=9.$

B. $\left(S\right):{\left(x-1\right)}^2+y^2+{\left(z+3\right)}^2=3$

C. $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=9$

D. $\left(S\right):{\left(x+1\right)}^2+y^2+{\left(z-3\right)}^2=3$

A.  $I\left(1;-3;0\right),R=\sqrt{5}$

B.  $I\left(1;3;0\right),R=\sqrt{5}$

C.  $I\left(-1;3;0\right),R=\sqrt{5}$

D.  $I\left(1;-3;0\right),R=5$

$\mathit{A}. \left(S\right):(x+1{)}^2+(y-2{)}^2+(z-1{)}^2=3$

$\mathit{B}. \left(S\right):(x-1{)}^2+(y-2{)}^2+(z+1{)}^2=9$

$\mathit{C}. \left(S\right):(x-1{)}^2+(y+2{)}^2+(z+1{)}^2=3$

$\mathit{D}. \left(S\right):(x+1{)}^2+(y-2{)}^2+(z-1{)}^2=9$

A.   ${\left(x+2\right)}^2+{\left(y-2\right)}^2+z^2=16$

B.   ${\left(x-2\right)}^2+{\left(y+2\right)}^2+z^2=16$

C.   ${\left(x-2\right)}^2+{\left(y-2\right)}^2+z^2=4$

D.   ${\left(x+2\right)}^2+{\left(y-2\right)}^2+z^2=4$