An overhead variance report includes which of the followings: a. Variable and fixed flexible budget costs
b. Variable and fixed actual results
c. Variable and fixed sales results
d. Variable and fixed variances

a. Variable and fixed flexible budget costs

Explanation:

An overhead variance report shows the difference between the overhead that was actually incurred to either produce or sell vs the overhead that was budgeted.

Overhead can either be fixed or variable so an overhead report will include both fixed and variable budgeted costs which will then be compared to fixed and variable actual overhead costs.

the first successful, urban blues recording, selling more than 75,000 copies, was made in year 1920.

mamie smith recorded the first commercially successful example of the urban blues,   with the recording of “crazy blues”."crazy blues" was recorded on august 10, 1920, in new york city. within a month of the release of “crazy blues” it had sold 75,000 copies.