Vivek: 4,00,000 x 8% = Rs.32,000.
Virat: (6,00,000 x 8% x 3/12) + (7,00,000 x 8% x 9/12) = 12,000 + 42,000 = Rs.54,000.
Vineet: (8,00,000 x 8% x 7/12) + (7,50,000 x 8% x 5/12) = 37,333 + 25,000 = Rs.62,333, approximately Rs.62,000.
Closest matching option: Vivek 32,000, Virat 54,000, Vineet 62,000.