A neighborhood planner uses a coordinate plane to design a new neighborhood. The coordinates $A(1,-1)$A(1,−1) , $B\left(1,-2\right)$B(1,−2) , and cap c open paren 2 comma negative 1 close paren$C(2,-1)$C(2,−1) represent House A, House B, and House C. The planner decides to place a playground centered at the origin, and moves the houses to make space. House A is now located at cap a prime open paren 3 comma negative 4 close paren$A'(3,-4)$A′(3,−4) . What are the new coordinates of House B and House C when each house is moved using the same translation?