Series Circuits - Engineering

Q1:

To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed

A between the second and third resistors

B at the negative terminal of the source

C between the third and fourth resistors

D at any point in the circuit

ANS:D - at any point in the circuit

How can it be measured directly by keeping anywhere it's not mentioned as series in the question, if series it was right but in parallel?