How are governments' vanilla fixed-coupon bonds' and inflation-linked bonds' (ILB) yields typically quoted?

Select one:

a.

Vanilla fixed coupon yields are quoted as nominal, while ILB's are quoted as real yields per annum.

b.

Vanilla fixed coupon yields are quoted as real, while ILB's are quoted as nominal yields per annum.

c.

Both are quoted as nominal yields per annum.

d.

Both are quoted as real yields per annum.