Hello, I need some help with these problems. Please show work and pick one of the answers.

1.Alpha Company manufactures product ZX29 using $40 of direct materials per unit and $80 of direct labor per unit. Product ZX29 is produced in batches of 50 units per batch. Alpha allocates its overhead costs using an activity-based costing system with 2 cost pools, labor-related and batch-related. The labor-related pool is allocated based on direct labor dollars, with an allocation rate of $1.5 per direct labor dollar. The batch-related pool is allocated based on the number of batches, with an allocation rate of $2,000 per batch. What is the total cost of producing 1,000 units of product ZX29 (in the long term)?

a. $120,000

b.$240,000

c.$280,00

d. $340,000

2.At current production volume of 10 units, Beta Company has variable costs of $40 per unit and fixed costs of $28 per unit. If production is expected to drop to 8 units in the next period, what is the total cost projected for the next period? (assume that this is a short-term change)

a. $320

b. $348

c. $544

d. $600

3.You are choosing among jobs A, B and C. The annual salary is $50,000 for job A, $60,000 for job B and $70,000 for job C. All three jobs require the same number of hours per week. The opportunity cost of choosing job B is

a.$50,000

b. $60,000

c. $70,000

d. $120,000

4.Target Company has a price of $80 per unit, unit variable cost of $30 per unit, and total fixed cost of $2,000. How many units does it have to sell to earn a target profit of $8,000

a. 100

b. 125

c. 160

d. 200