Oliver Corporation has developed the following cost standards for the production of its feather cat toys: What are the following variances (You do not need to say Unfavorable or Favorable, if it is Unfavorable it is a positive amount, if it is Favorable be sure to show it as a negative amount. Also, include the comma for to separate the thousands, i.e. $20,000.) Materials price variance - Materials quantity variance - Labor rate variance - Labor efficiency variance