Which of the following is obtained by condensation polymerisation?

Which of the following is formed by condensation polymerisation.

Dacron is obtained by the condensation polymerisation of

Nylon 6,6 is obained by condensation polymerisation of

Nylon 6,6 is obained by condensation polymerisation of

How many of the following is formed by condensation polymerisation? (I) Nylon-6,6 (II) Terylene (III) Bakelite