The correct answer is A. Each innings time limit is 75 minutes.
In a T20 match, each team has a maximum of 20 overs to bat. The batting team can have a maximum of 11 players on the field at any time. The bowling team can have a maximum of 4 bowlers, each of whom can bowl a maximum of 4 overs.
The fielding team is not allowed to change the field restrictions during the first 6 overs of the innings. This means that the batting team will have to face the same fielders for the first 6 overs.
If a batsman is dismissed, he has to leave the field immediately. The next batsman in the batting order has to come to the crease and start batting. If the batsman fails to reach the crease after being dismissed, the bowling team will be awarded 5 runs as penalty.
The batting team has to score as many runs as possible in the allotted 20 overs. The team with the highest score at the end of the match wins.
Option A is not correct because the time limit for each innings is 20 overs, not 75 minutes.