The given sentence has four parts. Out of the four parts, any one has an error or more, find the erroneous part. If the sentence is error free, mark Option '4' as 'No error'.
It's a fact that if we will not generate a (A)/ sound frequency, we will never (B)/ get rid of this corona virus.(C)/ No Error (D)
1
A
2
B
3
C
4
D