Choose from options: Determine if the sentence is true based on the text below:
Donald Berry has been to a hospital

Donald Berry, a professor of biostatistics at the University of Texas MD Anderson Cancer Center who was not involved in the study, told The Associated Press in an email that he believes the report is more accurate than the one released by Harvard investigators in May that estimated up to 4,600 more deaths than usual occurred.
Options are:
a). Yes.
b). It's impossible to say.
c). No.
a).