Use the Following to Answer Question 123 -(Table: the Cost of Producing Gadgets)Use Table: the Cost of The Cost

Use the following to answer question 123: $$\begin{array}{l}\text { Table: The Cost of Producing Gadgets }\\\begin{array} { l c } \hline \begin{array} { l } \text { Quantity } \\\text { of Gadgets } \\\text { Produced }\end{array} & \text { Total Cost } \\\hline 0 & \$ 100 \\1 & \$ 105 \\2 & \$ 110 \\3 & \$ 115 \\4 & \$ 120 \\5 & \$ 125 \\\hline\end{array}\end{array}$$
-(Table: The Cost of Producing Gadgets) Use Table: The Cost of Producing Gadgets.According to this table,the marginal cost is:

A) increasing at a constant rate equal to $5.
B) increasing at an increasing rate.
C) increasing at a decreasing rate.
D) constant and equal to $5.