Perform earned value analysis of the following project

Activity	Duration(days)	Precedence	Cost/day(RS.)
A	8		200
B	4		200
C	4	A,B	300
D	4	B	400

The progress after the end of 12th day is as follows:

Activity	%Completion	Incurred Cost
A	100	1400
B	100	400
C	75	1000
D	50	1000

Calculate SV, SPI, CV, and CPI respectively.