To get the AW of a cash fiow of $510,000$ that occurs every $10$ years forever, with the first one occurring $10$ years from now, you should:

Select one:

a$.$ Multiply $$10,000$ by $1$

b$.$ Multiply $$10,000$ by $(\frac{A}{F},1,10).$

c$.$ Multiply $$10,000$

d$.$ Multiply $$10,000$ by $(\frac{A}{P},1,10).$