[单选题]
If the pressure acting on 4 x9twml 9efz3b5 :pxb x0bdj9an ideal gas at constant temperature ibuqw y(-cc7pk)-dvk xi 420 qgs tripled, its volume i pkic w)bvyqx-u27qc k-(dg40s
A. reduced to one-third.
B. increased by a factor of three.
C. increased by a factor of two.
D. reduced to one-half.
