A veena player compares with a tuning fork the fundamental frequency generated by one of the strings of the veena and hears 4 beats per second. He then tightens the string a bit and hears only 3 beats per second. Then

The string has a lower frequency and its tension has to be relaxed to make the frequencies equal

The string has a higher frequency than the fork and has to be loosened for equality with fork

The string has a higher frequency than the tuning fork and must be tightened more

The string has a lower frequency than the tuning fork and must be tightened more to make the frequencies equal