Joseph, Inc Required:
(A) Determine the Total Overhead Cost Variance for June

Joseph, Inc., provides the following results of June's operations:
$$\begin{array} { | l | r | r | } \hline \text { Direct materials price variance } \ldots \ldots \ldots \ldots . & \$ 400 \mathrm {~F} \\\hline \text { Direct materials quantity variance } \ldots \ldots \ldots & 2,000 \mathrm { U } \\\hline \text { Direct labor rate variance } \ldots \ldots \ldots \ldots \ldots . & 100 \mathrm { U } \\\hline \text { Direct labor efficiency variance } \ldots \ldots \ldots \ldots & 1,200 \mathrm {~F} \\\hline \text { Variable overhead spending variance } \ldots \ldots & 400 \mathrm { U } \\\hline \text { Variable overhead efficiency variance } \ldots \ldots & 800 \mathrm {~F} \\\hline \text { Fixed overhead spending variance } \ldots \ldots \ldots . & 100 \mathrm { U } \\\hline \text { Fixed overhead volume variance } \ldots \ldots \ldots . . & 600 \mathrm {~F} \\\hline\end{array}$$ Required:
(a) Determine the total overhead cost variance for June.
(b) Applying the management by exception approach, which of the variances shown are of greatest concern? Why?