The marketing manager at a local chain supermarket is testing the effectiveness of four advertising strategies (Factor A) on sales, and runs the advertising over a two-week period. It is suspected that sales also differs by store locations because of differing customer traffic; therefore, the stores were blocked on location (Factor B). The manager wants to understand how sales depends upon advertising strategy and location using a two-way ANOVA without interaction. The sales (in $1000s), along with column, row, and overall means, are displayed below. How many degrees of freedom are there for factors A and B, respectively