Use Random-Variable Notation to Represent the Event $\{ \mathrm { Y } > 11 \}$

Multiple Choice

Use random-variable notation to represent the event.
-Suppose that two balanced dice are rolled. Let Y denote the sum of the two numbers. Use random-variable notation to represent the event that the sum of the two numbers is at least 11.

A) $\{ \mathrm { Y } > 11 \}$
B) $\{ X + Y \geq 11 \}$
C) $( 5,6 ) , ( 6,5 ) , ( 6,6 )$
D) $\{ \mathrm { Y } \geq 11 \}$