Identify the proper noun(s) in the following sentence.
Phoenix has seen a rise in the number of senior citizens relying on Medicare.
A.
Phoenix, Medicare
B.
Phoenix, citizens
C.
Medicare
D.
rise, number, citizens
Phoenix has seen a rise in the number of senior citizens relying on Medicare.
A.
Phoenix, Medicare
B.
Phoenix, citizens
C.
Medicare
D.
rise, number, citizens