The provision of a public good generates aa. negative externality, as does the use of a common resource. b. positive externality and the use of a common resource generates a negative externality. c. negative externality and the use of a common resource generates a positive externality. d. positive externality, as does the use of a common resource.

Abbington company has a manufacturing facility in brooklyn that manufactures robotic equipment for the auto industry. for year 1, abbingtonabbington collected the following information from its main production line: actual quantity purchased-200 units, actual quantity used-110 units, units standard quantity-100 units, actual price paid-$8 per unit, standard price-$10 per unit. atlantic isolates price variances at the time of purchase. what is the materials price variance for year 1? 1. $400 favorable. 2. $400 unfavorable. 3. $220 favorable. 4. $220 unfavorable.