Who occupies the top layers of the Motown workflow hierarchy?单项选择题

The jazz-educated, and famously hard-working , who were crucial in everything from arranging to touring and performing.

The customers—whom Barry Gordy considered the center of the mission and vision of the company.

The headlining acts, including the greats, like Marvin Gaye and Stevie Wonder

Songwriters and producers, including Barry Gordy himself