A company has the following data from the most recent financial period:

Static budget variance $980,000 U
Sales mix variance $161,500 F
Market share variance $100,000 U
Sales volume variance $105,000 F

Which of the following statements is correct?

a) The market size variance is $43,500 F.
b) The flexible budget variance is $875,000 F.
c) The sales quantity variance is $266,500 U.
d) The sales quantity variance is $818,500 F.