How many runs were needed by Don Bradman in his last innings to get an average of 100 in Tests?

Don Bradman needed exactly 4 runs in his final innings to achieve a Test batting average of 100. He had scored 6996 runs in 69 innings (6996/70 = 99.94), so 4 more runs would have made it 7000 runs in 70 innings (7000/70 = 100). He was unfortunately dismissed for 0, finishing with a legendary average of 99.94. Option C (5) would have given him an average above 100, while options A (3) and D (6) are mathematically incorrect.