20° 20° 10° 1 2 50° 4 en 3 50° 30° 30° An important concern in the study of heat transfer is to determine the steady-state temperature distribution of a thin plate when the temperature around the boundary is known. The figure represents a cross section of a metal beam, with negligible heat flow in the direction perpendicular to the plate. Let T₁, T4 denote the temperatures at the four interior nodes of the figure. The temperature at a node is approximately equal to the average of the 10° four nearest nodes-to the left, above, to the right, and below. Solve the system of equations below to find the temperatures T₁. T4- 4T₁T₂ - T4=30 - -T₁+4T2 T3 = 70 - To+4T - T=80 Select the correct choice below and, if necessary, fill in the answer boxes to complete your cho OA. The unique solution of the system is (10) - (Type integers or decimals rounded to the nearest thousandth as needed.) OB. The system has infinitely many solutions. OC. The system has no solution. Click to select and enter your answer(s) and then click Check Answer.