The standard cost card for a unit of Product AX at the Cleaning Chemicals Corp. shows the following standard cost information: During the month of October 20X1, Job O-3 was completed. It was the only job worked on during October. Four thousand Five hundred units were produced from the job. The actual costs were as shown below: Required: Calculate the quantity variance for materials for the month. (Indicate the effect of the variance by selecting "Favorable", "Unfavorable", and "None" for no effect (i.e., zero variance).)