A toy train track consists of a number of pieces of track which join together.

The shortest piece of the track is 15 centimetres long and each piece of track after the shortest is 2 centimetres longer than the previous piece.

The total length of the complete track is 7.35 metres.

The length of the longest piece of track, in centimetres, is

**A.** `21`

**B.** `47`

**C.** `49`

**D.** `55`

**E.** `57`