Sonic Corporation's variance report for the purchasing department reports 500 units of material A purchased and 1,200 units of material B purchased. It also reports standard prices of $2 for Material A and $3 for Material B. Actual prices reported are $2.10 for Material A and $2.80 for Material B. Sonic should report a total price variance of:
a. $190 F.
b. $20 F.
c. $20 U.
d. $190 U.