Miss Guo must inform the 52 students in the class. How long does it take to notify one person and everyone every minute?

First minute 1 person

The second minute 1+2=3 people.

The third minute 1+2+4=7 people.

The fourth minute 1+2+4+8= 15 people.

The fifth minute1+2+4+8+16 = 31person.

At the sixth minute, 1+2+4+8+ 15+32=63 people.

A: It takes at least 6 minutes to inform everyone.