Consider a chain res = chain(add.s(4, 4), mul.s(8), mul.s(1

Consider a chain

res = chain(add.s(4, 4), mul.s(8), mul.s(10))()

where add is defined as a+b and mul is defined as a*b. How can we get intermediate parent results

a) res.parent.parent

b) res.parent.get()

c) res.parent.parent.get()

d) All the options

Consider a chain res = chain(add.s(4, 4), mul.s(8), mul.s(10))() where add is defined as a+b and mul is defined as a*b. How can we get intermediate parent results