pakai cara yaaaaaaaa....

[tex]4 {}^{ \frac{3}{2} } \times 243 {}^{ \frac{2}{5} } \\ = 2 {}^{2 \times \frac{3}{2} } \times 3 {}^{5 \times \frac{2}{5} } \\ = 2 {}^{3} \times 3 {}^{2} \\ = 8 \times 9 \\ = 72[/tex]

Jadi, jawabannya A.