Final answer:
The size of each of the bit fields in ther-type instructions would decrease.
Step-by-step explanation:
In the given options, the size of each of the bit fields in ther-type instructions would decrease.
In option c, the width of the spaces between the bands will decrease, resulting in a smaller size of bit fields. In option d, the width of the spaces between the bands will first decrease and then increase, but overall, it will decrease in size.