I need some quick help on this please

I will rate!!

Many thanks and God bless!!!

During a recent month, Cantho Company planned to provide cleaning services to 30 customers for $33 per hour. Each job was expected to take 4 hours. The company actually served 12 more customers than expected, but the average time spent on each job was only 3.5 hours each. Cantho's revenues for the month were O A. $891 less than expected. O B. Cannot be determined from data given O C. $891 more than expected. OD. $1,584 more than expected