Apply Definition of MVD (multivalued dependency) to Example?
A FD is a MVD "in disguise". If an FD holds then a certain MVD also holds. With MVDs 1 is a special case of multi(ple). This can be seen from the rules of inference for MVDs at the definition link: RA → B implies A ↠ B.

Hint: t1 &amp; t2 can be t3 &amp; t4.

Hint: In the example there are only two tuples, so t1 &amp; t2 must be those, and you know the MVD so you know A &amp; B, and there are only two tuples, so if t3 &amp; t4 exist they must be those. So fill in the equations and see whether given those two tuples (t1 &amp; t2) there are also two tuples with the properties needed (t3 &amp; t4).