Can you anwser all four please?? THANK YOU!!

The managerial accountant at Twisted Tree Inc assessed a fixed overhead budget variance of $3,500 in the month of April. The standard hours in April were 2,900 hours and the standard rate was projected at $10 per machine - hour. There were unforeseen complications that involved raw materials and the standard rate projected per machine - hour was inaccurate. What was the standard rate per machine-hour if the standard fixed overhead cost of production is $39,500 ? What is the budgeted fixed overhead amount if the actual fixed overhead is $42,100 ? A. $13.31/ machine hour; $43,000 B. $13.62/ machine hour; $38,600 C. $11.29/ machine hour; $39,200 D. $14.52/ machine hour; $45,600 A. $5,070 favorable B. $5,070 unfavorable C. $3,900 favorable D. $3,900 unfavorable Smith Manufacturing designs and manufactures bathtubs for home and commercial applications. The company A. $3,600 favorable B. $3,600 unfavorable C. $10,500 favorable D. $10,500 unfavorable What is a disadvantage of using standard costs? A. Motivation of managers B. Usefulness in budgeting C. Simplifies bookkeeping D. Lack of timeliness