From 6 officers and 10 clerks in how many can 5 be chosen to include exactly one officer?	Choose the correct choice from the following options:	A) 1452	B) 1562	C) 2456	D) 1260	E) 660
Required number of ways = 6C1 * 10C4 = 1260   Answer is 1260
<result>D</result>
From 6 officers and 10 clerks in how many can 5 be chosen to include exactly one officer?