The ratio of income of Jitendra, and Narendra is 4 : 7 and the ratio of their expenditure is 6 : 5 respectively. If Jitandra saves R,s.400 out of Rs.1,800 income, then find the savings of Narendra.

A

Rs.2,900

B

Rs.2,000

C

Rs.4,900

D

Rs.3,900