When Ashish finishes a certain work, he gets a total wage of Rs. 70. When Kanika finishes the same work, he gets a total wage of Rs. 165. The daily wages of Ashish and Kanika are Rs. 3.5 and Rs. 5.5 respectively. If both of them do it together, what is the cost of the work?

A

Rs.144

B

Rs.120

C

Rs.140

D

Rs.108