Choose the option that correctly revises the following sentence. The artist's urban period, 1947 1956, was one of his most productive
times.
Select one:
The artist's urban period, 1947 1956—was one of his most productive times,
The artist's urban períod, 1947-1956, was one of his most productive times,
The artist's urban period—1947-1956—was one of his most productive times,
The artist's urban period. 1947-1956. was one of his most productive times.