[单选题]
2. Which improvement has electg1+oi+a 9yoydhgi2.x ron microscopy broumyjf-5d )k z,aght to Biology since light micro -yafzjkm5,)d scopy?
A. There is an greater visibility of natural colours.
B. The ability to see living cells.
C. Bigger samples can be used.
D. Images with a greater resolution are produced.
