{t A.K. London Corporation's direct labour costs and related information for the month of April were as follows: Actual total direct labour - hours 1,200 Standard total direct labour - hours 1,000 Total direct labour cost $10,440 Unfavourable direct labour price (rate) variance $1,500 What is A.K, London Corporation's direct labour quantity (efficiency) variance? (9 A. $1,490 favourable O B. $1,838 unfavourable O C. $1,490 unfavourable O D. $1,838 favourable