The correct answer is: A. double
The pow and sqrt functions return a double type number. A double is a floating-point number with 64 bits of precision. This means that it can store numbers with a much wider range of values than an integer, and it can also store numbers with decimal points.
An integer is a whole number, such as 1, 2, 3, etc. A float is a floating-point number with 32 bits of precision. This means that it can store numbers with a smaller range of values than a double, and it can only store numbers without decimal points.
A long is an integer with 64 bits of precision. This means that it can store numbers with a larger range of values than an integer, but it cannot store numbers with decimal points.
A short is an integer with 16 bits of precision. This means that it can store numbers with a smaller range of values than an integer.
I hope this helps!