Answer:
A is larger than B.
Step-by-step explanation:
To compare A and B, we can take the natural logarithm of both numbers and compare their values.
ln(A) = ln(3973!)
ln(B) = ln(1987^3973)
Using Stirling's approximation for large factorials, we can estimate ln(3973!) as 3973 * ln(3973) - 3973.
For ln(1987^3973), we can simply calculate 3973 * ln(1987).
After performing the calculations, we find that ln(A) > ln(B), which means A is larger than B.
