Question $1$ of $10.$

Alex, a full$-$year Nevada resident, received income from the following sources during the year:

Wage income derived from work performed in Nevada for a Nevada employer.

Interest income from a savings account held at a California bank.

Rental income from a house located in California.

Alimony paid by her ex$-$husband, Walter, under a $2014$ divorce agreement. Walter is a California resident.

Which item has a California source? The:

Wage income.

Savings account interest.

Rental income.

Alimony.