Which of the following statements regarding Ultra High

Networth Individuals $($UHNI$)$ is MOSTLY TRUE?

China has $80,000$ Ultra High Net worth Investors $($U$-$

HNI $),$ those who have more than $$50$ million to invest

USA has $80,000$ Ultra High Net worth Investors $($U$-$

HNI$),$ those who have more than $$1$ billion to invest

USA has $80,000$ Ultra High Net worth Investors $($U$-$

HNI $),$ those who have more than $$50$ million to invest

USA has $18$ million Ultra High Net worth Investors $($U$-$

HNI$),$ those who have more than $$1$ billion to invest