The information below comes from the Form $10-$K for MGM Resorts International for $2018.$

Year Ended December $31,2018$

$($In thousands$)$

Net income attributable to MGM Resorts International $....$

Plus: Net income attributable to noncontrolling interests $...$ $ $466,772$

$117,122$

Net income $.........................................................$ $ $583,894$

Total MGM Resorts International stockholders$$ equity $......$

Noncontrolling interests $..........................................$ $ $6,512,283$

$3,957,508$

Total stockholders$$ equity $.......................................$ $ $10,469,791$

MGM China paid $$78$ million of dividends to its shareholders of which MGM Resorts International received $$44$ million and noncontrolling interests received $$34$ million.

a$.$ If an investor is interested in the profitability of MGM Resorts' worldwide operations, which net income number would be most relevant?

b$.$ What proportion of net income was attributable to shareholders of MGM Resorts International in $2018?$

c$.$ Of the total equity of MGM Resorts International, what proportion came from controlling shareholders? Who is the controlling shareholder?

d$.$ Consider the dividends paid by MGM China. Based on this information alone, what proportion of the MGM China shares is owned by MGM Resorts International?