Use each of the following figures only once and form three groups. The three groups so formed are: 
(1,4,7), (2,5,8), (3,6,9)
(1,5,7), (2,4,8), (3,6,9)
(1,4,7), (3,5,8), (2,6,9)
(1,4,7), (2,6,8), (3,5,9)
Consider the argument and decide which of the given assumptions is/are implicit.
Argument:
A flyover has been constructed with a heavy cost of ₹200 crores, yet people are not utilising the flyover much.
Assumptions:
1. Construction of the flyover is useless.
2. The time, money and energy spent on the construction of the flyover was wasted.
Both 1 and 2 are implicit.
Only assumption 2 is implicit.
Only assumption 1 is implicit.
Neither 1 nor 2 is implicit.
Select the option that gives the number missing from the following figure. 