Ringgold Company Experienced an Event That Affected Its Financial Statements

Multiple Choice

Ringgold Company experienced an event that affected its financial statements as indicated below: Which of the following accounting events caused the indicated effects on the company's accounting equation?
$$\begin{array} { | c | c | c | c | c | c | c | c | c | c | c | c | } \hline { \text { Assets } } &&& = & \text { Liab. } & + & \text { Equity } & \text { Rev. } & - & \text { Exp. } & = & \text { Net Inc. } \\\hline \begin{array} { c } \text { Mfg. } \\\text { OH }\end{array} & + & \text { WIP }\text { Inv. } & & & & & & & & & \\\hline ( 1,200 ) & + & 1,200 & = & \text { n/a } & + & \text { n/a } & \text { n/a } & - & \text { n/a } & = & \text { n/a } \\\hline\end{array}$$

A) Actual overhead cost was incurred
B) Underapplied overhead was written off
C) Estimated overhead was charged to production
D) None of these.