(A) Martin Cooper
(B) Denis Riche
(C) Charles Simonyi and Richard Brodie
(D) Bill Gates
Charles Simonyi and Richard Brodie were software developers who played significant roles in the development of Microsoft Word, one of the most popular word-processing software applications. Charles Simonyi, a Hungarian-American computer programmer, joined Microsoft in 1981 and led the development of Microsoft Word. Richard Brodie, an American computer programmer, also contributed to the early development of Microsoft Word during his time at Microsoft. Their work on Microsoft Word contributed to the success of the software and its widespread adoption.