Directions: Study the following information carefully and answer the questions given below:

Five persons C, D, F, G, and H work on different posts HR, Accountant, Engineer, SME, and Salesman but not necessarily in the same order. The designations are in the same order where HR is the senior-most post and the Salesman is the junior-most post. One person works on one post only. Each of them is currently assigned with different number of tasks i.e. 18, 7, 6,13, and 21 not necessarily in the same order.

G is the Accountant. D has tasks equal to the sum of the tasks of F and H. G has thrice the tasks of that of H and at least one person is junior to H. F has a prime number of tasks. F is just junior to C. The number of tasks assigned to H is a multiple of the number of persons junior to him. Number of person senior to F is equal to number of person junior to D.