Verbal Aptitude

The active voice of: 'A new variety of drought-tolerant pulse was developed by the research institute.' is:

Options:

• (A) The research institute developed a new variety of drought-tolerant pulse.
• (B) The research institute has developed a new variety of drought-tolerant pulse.
• (C) The research institute was developing a new variety of drought-tolerant pulse.
• (D) The research institute is developing a new variety of drought-tolerant pulse.