Camping Supply Company has developed a new camping lamp that runs on solar power. The solar cells charge in the sun all day and then the lamp is ready to run when the sun goes down. The company has a standard costing system to help control costs and has established the following standards related to the new camping lamp: Droct materids 3 small solar cells per hap ot to60 per oal Droct isbour: 075 hours per lamp at 52 per hour During March, the company produced 4,000 camping lights. Production data for March are as follows: Dreot materak: 20000 smat solar onls arreporchased at a cost of 5066 per cot 6000 of thest were sti in nvertory at the erd of the month (there wis no opering invitoy). Drect habour: 3100 drect hbour hours wcre norhod at a cast di 535000 Required: 1. Compute the following variances for March: a. Direct materials price and quantity variances. b. Direct labour rate and efficiency variances. 2. Prepare a brief explanation of the possible causes of each variance