The Following Table Represents the Cost to Ship from Distribution

The following table represents the cost to ship from Distribution Center 1, 2, or 3 to
Customer A, B, or C.
$$\begin{array}{l}~~~~~~~~~~~~~~~~~~~~~~~~~~\text { Customer }\\\begin{array} {c } \text { DC } & \text { A } & \text { B } & \text { C } & \text { Supply } \\\hline \mathbf { 1 } & 4 & 6 & 8 & 500 \\\mathbf { 2 } & 5 & 2 & 7 & 400 \\\mathbf { 3 } & 3 & 5 & 9 & 300 \\\hline\text { Demand } & 200 & 350 & 400 &\end{array}\end{array}$$
-The constraint that represents the quantity supplied by DC 1 is:

A) 4X1A + 6X1B + 8X1C ? 500
B) 4X1A + 6X1B + 8X1C = 500
C) X1A + X1B + X1C ? 500
D) X1A + X1B + X1C =500